Proteolytic Enzymes [Discontinued] by Wonder Laboratories

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Allergic rhinitis (hay fever). Although there has been interest in using oral bromelain for allergic rhinitis, there is insufficient reliable information about the clinical effects of bromelain for this condition.
• Aromatase inhibitor-induced arthralgia. Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in patients with aromatase inhibitor-induced arthralgia shows that taking a specific combination product (Opera, Gam Farma), providing bromelain 20 mg, alpha-lipoic acid 240 mg, Boswellia serrata 40 mg, and methylsulfonylmethane 200 mg, daily for 6 months reduces arthralgia symptoms when compared to baseline (109570). The validity of these findings is limited by a lack of placebo control group. Further, it is unclear if these findings are due to bromelain, other ingredients, or the combination.
• Burns. Preliminary clinical research shows that topical bromelain is beneficial for burn debridement. It is unclear if topical bromelain is beneficial for scar prevention. Details: Preliminary clinical research and chart reviews show that gels formulated with proteolytic enzymes derived from bromelain (Debridase or NexoBrid, MediWound Ltd.), applied under an occlusive dressing for 4 hours, help debride burns, including chemical and electrical burns, in children and adults (18275,91113,103297,108149). However, only one of these studies compared the bromelain-based enzymatic debridement product to standard of care. In this study, which included surgical excision or non-surgical debridement, bromelain-derived gel decreased the time to complete debridement by 6.5 days, reduced the risk of surgical excision by 65%, and reduced the risk for autografts by 48%. However, in the long-term, there appeared to be no difference in quality of life or scarring between groups (91113).
• Cancer. Although there has been interest in using oral bromelain for cancer, there is insufficient reliable information about the clinical effects of bromelain for this condition.
• Chemotherapy-induced peripheral neuropathy. Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in adults with chemotherapy-induced peripheral neuropathy shows that taking a specific product (Opera, Gamfarma s.r.l.) containing bromelain 20 mg, alpha-lipoic acid 240 mg, methylsulfonylmethane (MSM) 200 mg, and boswellia 40 mg daily for 12 weeks reduces overall pain when compared with baseline (96449). The validity of these findings is limited by the lack of a control group. Additionally, it is not clear if benefit is due to alpha-lipoic acid, the other ingredients, or the combination.
• Diabetes. Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small observational study in patients with a family history of type 1 diabetes found that taking a specific product (Mucos Pharma) containing bromelain 90 mg. rutin 100 mg, and trypsin 48 mg daily for 24 months is not associated with reduced incidence of type 1 diabetes at 8 years (99472).
• Diabetic foot ulcers. Although there has been interest in using topical bromelain for diabetic foot ulcers, there is insufficient reliable information about the clinical effects of bromelain for this condition.
• Exercise-induced muscle soreness. It is unclear if oral bromelain is beneficial for preventing exercise-induced muscle soreness. Details: One small clinical study shows that taking bromelain 300 mg three times daily, immediately following an intense exercise regimen, does not reduce delayed onset muscle soreness and has no effect on pain, flexibility, or skeletal weakness when compared with either ibuprofen 400 mg three times daily or placebo (10622). However, a small clinical study shows that taking a combination protease tablet containing bromelain 50 mg, trypsin 75 mg, papain 50 mg, amylase 10 mg, lipase 10 mg, lysosome 10 mg, and chymotrypsin 2 mg, four times in one day before downhill running, can improve recovery of contractile muscle function and decrease muscle soreness when compared with placebo (67838). It is unclear if these effects are due to bromelain, other ingredients, or the combination.
• Exercise-induced respiratory infections. Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Preliminary clinical research in non-elite male runners shows that taking a combination product (Wobenzym Plus, Mucos Pharma) providing bromelain 540-1080 mg, rutin 600-1200 mg, and trypsin 288-576 mg daily for 3 weeks, starting one week before a marathon, does not reduce the risk of a post-race respiratory tract infection when compared with placebo (96766).
• Kidney stones (nephrolithiasis). It is unclear if oral bromelain is beneficial for kidney stone expulsion. Details: Observational research in patients with 4-10 mm kidney stones found that adding bromelain to tamsulosin is associated with a 12% increased rate of spontaneous stone expulsion when compared to tamsulosin alone (100752).
• Knee pain. It is unclear if oral bromelain is beneficial for knee pain. Details: Preliminary clinical research shows that taking bromelain (Bromelin, Lichtwer Pharma Ltd.) orally for 30 days can reduce mild, acute (duration of less than 3 months) knee pain in otherwise healthy patients when compared to baseline. A daily dose of 400 mg seems to be more effective than 200 mg daily for relieving pain, stiffness, and physical function of the knee, with reductions in symptom scores of 59% and 41%, respectively (11457).
• Lymphedema. Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Some clinical research in patients who have undergone a mastectomy shows that taking a specific combination product containing bromelain, rutin, pancreatin, papain, trypsin, and chymotrypsin (Wobenzym N, Mucos Pharma) daily for 7 weeks reduces arm swelling associated with lymphedema when compared with diuretics (24560). Other preliminary clinical research in patients with primary or secondary lymphedema of the upper or lower limbs shows that taking a different combination product containing bromelain 100 mg, rutin 300 mg, and sweet clover 100 mg daily for 6 months decreases pitting, limb volume, pain, and quality of life when compared to baseline (103298). The validity of these results is limited by the lack of a control group. Additionally, it is unclear if these findings are due to bromelain, other ingredients, or the combination.
• Multiple sclerosis (MS). Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A preliminary clinical study in patients with relapsing-remitting MS shows that taking an enzyme combination containing bromelain 90 mg, rutin 100 mg, and trypsin 48 mg per tablet for at least 3 months does not affect the progression of disability, relapse rate, or central nervous system lesions when compared with placebo (99468). The validity of these results is limited by the short duration of treatment.
• Ocular floaters. Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A moderate-sized clinical study in patients with spontaneous symptomatic vitreous opacities (ocular floaters) shows that taking oral mixed fruit enzyme capsules containing bromelain 190 mg, papain, and ficin once, twice, or three times daily for 3 months eliminates floaters in 55%, 63%, and 70% of patients, respectively, when compared with an elimination rate of 5% with vitamin C as a control. Additionally, patients with vitreous hemorrhage-induced symptomatic vitreous opacities taking the mixed fruit enzyme capsules 3 times daily for 3 months reduced intraocular blood by 56% and improved visual acuity, but these effects were not found for lower doses and shorter durations when compared with a control (111650). It is unclear if these effects are due to bromelain, other ingredients, or the combination.
• Osteoarthritis. It is unclear if oral bromelain is beneficial for osteoarthritis. Details: A small clinical trial shows that taking bromelain 800 mg daily for 12 weeks as an adjunctive treatment for moderate to severe knee osteoarthritis is no more effective than placebo for improving symptom scores (18274). Other preliminary clinical research shows that taking bromelain 500 mg daily for 4 weeks for mild to moderate knee osteoarthritis is less effective than diclofenac 100 mg daily for improving quality of life, joint pain, and joint function (96216). However, preliminary clinical research shows that oral combination products containing bromelain can reduce pain and improve function in knee osteoarthritis (6252,91104,91106,92235,99467,99477,103299). Bromelain 180 mg has been used in combination with trypsin 144 mg and rutin 200 mg (Phlogenzym, Mucos Pharma GMBH; Wobenzym, Mucos Pharma GmbH) three times daily for 3-12 weeks, with effects comparable to diclofenac, usually taken as 50 mg three times daily for one week, then twice daily thereafter. This product also reduces the need for rescue analgesics by 95% when compared with placebo (6252,91104,92235,99467,99477). Other studies have used a specific combination supplement (AINAT, Laboratoire de Rhumatologie Appliquée) containing Devil's claw 600 mg, turmeric 400 mg, and bromelain 300 mg, taken 2-3 times daily for 2-8 weeks (91106) or a combination of bromelain 250 mg and papain 250 mg (Nature's Life Bromelain & Papain, NutraMarks, Inc.) twice daily, plus aceclofenac 100 mg twice daily for 6 weeks (103299).
• Pain (acute). It is unclear if oral bromelain is beneficial for acute pain. Details: A meta-analysis of 9 small clinical studies in patients experiencing acute pain due to various etiologies shows that taking bromelain slightly improves subjective pain scores and allows patients to open their mouth wider after oral operations when compared with a control (113513).
• Parturition. Although there has been interest in using oral bromelain for shortening the duration of labor, there is insufficient reliable information about the clinical effects of bromelain for this purpose.
• Periodontitis. It is unclear if oral bromelain is beneficial for periodontitis. Details: A very small clinical study in adults with periodontitis shows that taking bromelain 500 mg (Anaheal) twice daily for one week after undergoing pocket elimination surgery reduces bleeding on probing but does not improve gingival index, plaque index, or probing pocket depth when compared with placebo when assessed five weeks after surgery (111691). The validity of these effects is limited by a very small sample size and inadequate statistical power.
• Pityriasis lichenoides chronica (PLC). It is unclear if oral bromelain is beneficial for PLC. Details: A case series suggests that taking bromelain 40 mg orally three times daily for one month, then twice daily for a second month, then once daily for a third month, helps treat episodes of PLC when compared to baseline (18280).
• Postoperative pain. While evidence is mixed, some small clinical studies suggest that oral bromelain reduces postoperative pain after wisdom tooth extraction. It is unclear if bromelain improves pain after other surgical procedures. Details: Meta-analyses and clinical research in a small number of patients undergoing wisdom tooth extraction shows that bromelain modestly reduces pain for up to 8 days when compared with control (91109,91110,100750,100751). Also, three small clinical trials show that bromelain 160-1500 mg, taken in 3-4 divided doses daily for 4-6 days, reduces dental pain and swelling similarly to taking ketoprofen 100 mg twice daily, diclofenac sodium 25 mg four times daily, or aceclofenac 100 mg twice daily (91109,91110,110546). In contrast, several other small clinical studies show that taking bromelain does not reduce swelling or pain after wisdom tooth extraction when compared with placebo (91107,96214,96215). These studies might have not been sufficiently powered to detect a smaller effect. Meta-analyses also suggest that bromelain does not appear to have a significant effect on postoperative swelling or trismus (100750,100751). However, a more recent study in patients undergoing wisdom tooth extraction shows that taking bromelain 500 mg three times daily for 5 days reduces the severity of postoperative swelling and trismus when compared with aceclofenac, a nonsteroidal anti-inflammatory drug (NSAID) used in some European and Asian countries (110546). Bromelain, in combination with other ingredients, has also been evaluated for reducing pain after rotator cuff tear repair. Clinical research shows that taking a specific supplement (Tenosan, Agave) containing bromelain 50 mg, arginine-L-alpha-ketoglutarate 500 mg, methylsulfonylmethane (MSM) 550 mg, hydrolyzed collagen type I 300 mg, vitamin C 60 mg, and Vinitrox 125 mg daily for 3 months decreases shoulder pain, but does not improve shoulder function, in postoperative patients (19322).
• Postoperative swelling. Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small preliminary clinical study in patients undergoing surgery of the jaw shows that taking an enzyme combination of bromelain 180 mg, rutin 200 mg, and trypsin 96 mg twice daily for 5 days in addition to standard treatment reduces soft-tissue thickness (indicating the amount of swelling) at most of the nine assessed facial points when compared to control (99476).
• Rhinosinusitis. It is unclear if oral bromelain is beneficial for rhinosinusitis. Details: Several small clinical trials show that short-term and long-term use of bromelain reduces symptoms of acute and chronic sinusitis, especially nasal mucosal inflammation and edema (18276,18277,18278,18279,91105). The trials used bromelain 40 mg orally (usually the product Ananase) four times daily for six days as an adjunct to antibiotics (18276,18278,18279) or 6 bromelain tablets each containing enzymes of 500 International Pharmaceutical Federation (FIP) units for 12 weeks (91105). Bromelain is usually taken in combination with decongestants, antihistamines, and/or antibiotics. However, the studies have a number of methodological problems, and results are inconsistent. Bromelain has also been evaluated as part of a combination product. A small study in patients over 12 years old with chronic sinusitis shows that taking a combination product containing bromelain 200 mg, Boswellia serrata, black currant, and vitamin D (Flogostop Forte, Humana Italia S.p.A) 1-2 times daily for 15-30 days as an adjunctive therapy to inhaled corticosteroids modulates hyperemia of the mucosa, rhinorrhea, and local inflammation when compared with inhaled corticosteroids alone and baseline (111501). It is unclear if these findings are due to bromelain, other ingredients, or the combination.
• Sprains. Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A preliminary clinical study in patients with a sprained ankle shows that taking a specific enzyme combination (Phlogenzym, Mucos Pharma) containing bromelain 90 mg, trypsin 48 mg, and rutin 100 mg, or taking different combinations of the individual enzymes three times daily for 10 days, is no more effective for relieving pain than placebo (99473).
• Tendinopathy. Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Clinical research in patients with Achilles tendon insertional tendinopathy shows that taking two sachets of a specific supplement (Tenosan, Agave, Prato, Italy) containing a total of bromelain 100 mg, arginine-L-alpha-ketoglutarate 1000 mg, methylsulfonylmethane (MSM) 1100 mg, hydrolyzed collagen type I 600 mg, vitamin C 120 mg, and Vinitrox 25 mg orally for 60 days improves function and pain when compared with placebo (19321).
• Urinary tract infections (UTIs). Oral bromelain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical trial shows that a combination of bromelain 50 mg and trypsin 1 mg (Kimotab, Mochida Pharmaceutical), taken in a dose of 8 tablets daily for 2 days, does not improve subjective symptoms of UTIs when compared with placebo (18282).
• Venous leg ulcers. Although there has been interest in using topical bromelain for venous leg ulcers, there is insufficient reliable information about the clinical effects of bromelain for this condition.
• Wound healing. It is unclear if enzymatic debridement with bromelain improves the healing of various types of chronic wounds. Details: A meta-analysis of 12 small clinical studies shows that topical bromelain reduces time to complete debridement by around 6 days but has no effect on time to healing when compared with a control (113513). However, the validity of these effects is limited by significant publication bias and a small number of studies per outcome. One small clinical study, included in the analysis above, of patients with chronic wounds related to diabetes, surgery, trauma, or venous insufficiency shows that use of bromelain-based enzymatic debridement (EscharEx, MediWound Ltd), administered as up to ten daily applications of 4 hours each, increases the incidence of complete debridement over the next 6 months to 55% of patients, compared with only 29% of those using the bromelain-free gel. However, there was no difference in changes in wound area, non-viable tissue area, or the incidence or time to complete wound closure (108148). More evidence is needed to rate bromelain for these uses.

(Read more about BROMELAIN)

EFFECTIVE

• Cataracts. Chymotrypsin is effective when used as an adjunct in cataract surgery according to FDA-approved prescription product labeling (9,509).

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Burns. There is some evidence that taking a trypsin / chymotrypsin mixture orally might decrease tissue destruction in burn patients (716).
• Chronic obstructive parotitis. Preliminary clinical research shows that injecting a combination of chymotrypsin 5 mg and gentamicin into the parotid salivary gland ducts and then draining after 3-5 minutes improves subjective measures of pain and swelling in chronic obstructive parotitis when compared with gentamicin alone (99720).
• Fractures. Preliminary clinical research shows that taking a combination of trypsin and chymotrypsin orally seems to reduce inflammation and edema associated with hand fractures (717,718). More evidence is needed to rate chymotrypsin for these uses.

(Read more about CHYMOTRYPSIN)

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Celiac disease. Although there has been interest in using oral lipase for celiac disease, there is insufficient reliable information about the clinical effects of lipase for this purpose.
• Dyspepsia. It is unclear if oral lipase is beneficial for improving symptoms of postprandial distress syndrome. Details: A small clinical trial shows that taking a specific acid-resistant lipase (Amano Enzyme USA) 280 mg immediately before a high-fat meal does not reduce postprandial bloating and nausea when compared with placebo in individuals with postprandial distress syndrome (101900).
• Inflammatory bowel disease (IBD). Although there has been interest in using oral lipase for IBD, there is insufficient reliable information about the clinical effects of lipase for this purpose.
• Prematurity. It is unclear if adding a specific form of lipase, recombinant human bile salt-stimulated lipase (rhBSSL), to infant formula improves outcomes in premature infants. Some research suggests a potential increased risk for adverse effects. Details: Human breast milk contains rhBSSL, but it is inactivated when breast milk is pasteurized for donation. Clinical research in infants born before 32 weeks' gestation shows that adding rhBSSL as 8700 units per 100 mL formula or pasteurized breast milk, for 4 weeks does not increase growth velocity, body length, or head circumference over the next 12 months when compared with formula or pasteurized breast milk devoid of lipase. However, the infants who were small for gestational age (SGA), which made up approximately 15% of the study population, grew by an additional 1.9 grams/kg daily on average when compared with placebo (101940). More evidence is needed to rate lipase for these uses.

(Read more about LIPASE)

EFFECTIVE

• Pancreatic insufficiency. Oral prescription pancreatic enzyme products improve digestion in patients with exocrine pancreatic insufficiency due to various causes. It is unclear if non-prescription pancreatic enzyme products would be beneficial; their use is not recommended. Details: Prescription pancreatic enzyme products are effective for improving fat, protein, and total energy absorption in patients with exocrine pancreatic insufficiency due to cystic fibrosis, chronic pancreatitis, pancreas resection or removal, or other conditions (67622,67634,67676,67688,67694,67699,67714) (98667,98674,98676,98677,99115,99116,99118,99119,99120,99122)(99124,99125,99126,99127). Improvement in fat absorption and digestion occurs in as little as 1 week. Symptoms such as gas and abdominal discomfort are also improved in most patients (98667,98674,98677). Various prescription products have been approved by the US Food and Drug Administration (FDA) for this indication (95743). These prescription pancreatic enzyme products are typically used at a starting dose of 500-1000 lipase units/kg body weight per meal to a maximum of 2500 lipase units/kg body weight per meal or 10,000 lipase units/kg body weight daily or 4000 lipase units/gram of fat daily (99130). Despite being beneficial for most patients with exocrine pancreatic insufficiency, there is some evidence that prescription pancreatic enzyme products might not be beneficial in all patients. In patients with pancreatic insufficiency following gastrectomy for gastric cancer, research on prescription pancreatic enzyme products shows conflicting results (67617,95744). Also, a small study shows that taking a prescription pancreatic enzyme product for 26-30 days does not improve time to recovery from pancreatic insufficiency related to acute pancreatitis (99117). However, the small size of most of these studies limit the reliability of the results. One large clinical study shows that taking prescription pancreatic enzyme products for pancreatic insufficiency following pancreatoduodenectomy does not improve body weight or serum albumin levels. However, the dose used in this study was lower than recommended in the US guidelines, and adherence to the prescribed regimen was poor (102322). There is no strong evidence that supplemental forms of pancreatic enzyme products help with digestion in patients with pancreatic insufficiency. Non-prescription pancreatic enzyme products are not recommended for this use.

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Atopic dermatitis (eczema). It is unclear if oral pancreatic enzyme products are beneficial in children with atopic dermatitis. Details: A small clinical study in children with refractory atopic dermatitis and food allergies shows that taking a specific prescription pancreatic enzyme product (Creon, Solvay Pharma) 37,500 or 75,000 protease units with each meal and 18,750 or 37,500 protease units with each snack for 6 weeks reduces the severity of atopic dermatitis when compared with baseline (102321). The validity of this finding is limited by the lack of a comparator group.
• HIV/AIDS. It is unclear if oral pancreatic enzyme products are beneficial in children with HIV. Details: Nutrient malabsorption is common in individuals with HIV/AIDS, possibly leading to malnutrition. Preliminary clinical research in children aged 1-14 years with HIV shows that taking a prescription pancreatic enzyme product (Creon 10,000) 1000 lipase units per gram of digested fat for 2 weeks reduces fecal fat loss when compared with baseline. Although improvement occurred in all of the children, a complete response, resulting in no steatorrhea, occurred in only 33% (99123). The validity of these findings is limited by the lack of a comparator group.
• Nonalcoholic fatty liver disease (NAFLD). It is unclear if oral pancreatic enzyme products are beneficial in patients with NAFLD following pancreaticoduodenectomy. Details: NAFLD is a common complication post-pancreaticoduodenectomy (PD). A small clinical study in patients who developed NAFLD after PD shows that taking a prescription pancreatic enzyme product (LipaCreon, marketed as Creon in the US) 1800 mg daily for 6 months improves the liver-to-spleen attenuation ratio on computed tomography when compared with baseline, suggesting a reduction in hepatic fat content. Liver function was also improved, and most patients showed improvement in symptoms such as diarrhea (99113). The validity of these findings is limited by the lack of a comparator group. Although another preliminary clinical study shows that taking this prescription product for 12 months is as effective for preventing NAFLD after PD as taking specific non-prescription pancreatic enzyme products, including Politose (Takeda Pharmaceutical Co. Ltd) 1800 mg daily or Toughmac-E (Ono Pharmaceutical Co. Ltd) 3 grams daily for 10-12 months (99112), this study was underpowered and was not necessarily designed to detect between-group differences.
• Pancreatic cancer. It is unclear if oral pancreatic enzyme products improve nutrition status and health in patients with clinically overt exocrine pancreatic insufficiency resulting from pancreatic cancer. Details: Exocrine pancreatic insufficiency can be a complication of pancreatic cancer. One clinical study in patients with unresectable pancreatic cancer shows that taking a prescription pancreatic enzyme product (Norzyme, Nordmark Arzneimittel GmbH & Co. KG; not available in the US) 6-9 capsules daily for 8-24 weeks does not increase body weight, global assessment, quality of life, or survival when compared with placebo (99114). Another preliminary clinical study shows that taking a high-dose pancreatic enzyme product providing 48,000 lipase units per meal for 8 weeks during chemotherapy does not improve body mass index, nutritional parameters, or survival when compared with no treatment (99111). However, in both studies, clinically overt exocrine pancreatic insufficiency was absent in most of the patients. In a study in which clinically overt exocrine pancreatic insufficiency was more prevalent, taking a prescription pancreatic enzyme product (Panzytrat 25,000, Nordmark GmbH; not available in the US) 50,000 lipase units per meal three times daily for 8 weeks appears to increase body weight by about 5% when compared with placebo (67708). More evidence is needed to rate pancreatic enzyme products for these uses.

(Read more about PANCREATIC ENZYME PRODUCTS)

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Cancer. Although there has been interest in using oral papain for cancer, there is insufficient reliable information about the clinical effects of papain for this purpose.
• Dental caries. It is unclear if topical papain gel is beneficial for reducing procedure time or pain in children having caries removed by a dentist. Details: A small clinical study in children 3-9 years of age with dental caries shows that application of a specific papain gel (Brix3000, Brix Medical Science) 3000 U/mg during atraumatic restorative treatment (ART) by a dentist actually increases the time required to remove caries tissue, with no effect on pain, when compared with ART alone (107434).
• Diabetic foot ulcers. Although there has been interest in using topical papain for diabetic foot ulcers, there is insufficient reliable information about the clinical effects of papain for this purpose.
• Exercise-induced muscle soreness. Oral papain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in healthy males shows that taking a combination enzyme tablet containing papain 50 mg, trypsin 75 mg, bromelain 50 mg, amylase 10 mg, lipase 10 mg, lysosome 10 mg, and chymotrypsin 2 mg, four times in one day before downhill running, improves recovery of contractile muscle function and decreases muscle soreness when compared with placebo (67838). It is unclear if these findings are due to papain, other ingredients, or the combination.
• Herpes zoster (shingles). Although there has been interest in using oral papain for shingles, there is insufficient reliable information about the clinical effects of papain for this purpose.
• Insect bite. It is unclear if topical papain is beneficial in individuals with fire ant stings. Details: A small clinical study in individuals with fire ant stings shows that applying gauze soaked with a specific papain-containing meat tenderizer (Adolph's meat tenderizer) to the sting for 20 minutes does not reduce pain or itching when compared with placebo (67845).
• Intestinal parasite infection. Although there has been interest in using oral papain for intestinal parasite infections, there is insufficient reliable information about the clinical effects of papain for this purpose.
• Jellyfish stings. It is unclear if topical papain is beneficial in individuals with jellyfish stings. Details: A small clinical study in individuals with jellyfish stings shows that submerging affected skin into a solution with a papain-containing meat tenderizer (Adolph's meat tenderizer), starting two minutes after a jellyfish sting and continuing for at least 20 minutes, is less effective than hot water alone in decreasing pain caused by the jellyfish sting (67835).
• Pressure ulcers. Although there has been interest in using topical papain for pressure ulcers, there is insufficient reliable information about the clinical effects of papain for this purpose.
• Radiation dermatitis. Oral papain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: One small clinical study in patients receiving pelvic radiotherapy shows that taking three capsules of a specific combination product (Wobe-Mugos E, Mucos Pharma) containing papain 100 mg, trypsin 40 mg, and chymotrypsin 40 mg per capsule, four times daily, beginning 3 days prior to radiotherapy and continuing until the last day of therapy, does not attenuate skin deterioration when compared with placebo (67834). However, another small, open-label clinical study in patients with uterine carcinoma shows that taking three capsules of the same combination product four times daily, beginning 7 days before radiotherapy and continuing for 9 weeks, reduces skin reactions when compared with control (67831). It is unclear if these findings are due to papain, other ingredients, or the combination.
• Radiation-induced cystitis. Oral papain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in patients with uterine carcinoma receiving radiotherapy shows that taking three capsules of a specific combination product (Wobe-Mugos E, Mucos Pharma) containing papain 100 mg, trypsin 40 mg, and chymotrypsin 40 mg per capsule, four times daily, beginning 7 days before radiotherapy and continuing for 9 weeks, reduces genitourinary symptoms when compared with control (67831).
• Radiation-induced nausea and vomiting. Oral papain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in patients receiving pelvic radiotherapy shows that taking three capsules of a specific combination product (Wobe-Mugos E, Mucos Pharma), containing papain 100 mg, trypsin 40 mg, and chymotrypsin 40 mg per capsule, four times daily, beginning 3 days prior to radiotherapy and continuing until the last day of therapy, does not reduce radiation-related nausea or vomiting when compared with placebo (67834).
• Tonsillopharyngitis. Oral papain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Two small clinical studies in patients with pharyngitis and/or tonsillitis shows that use of throat lozenges containing papain 2 mg, lysozyme 5 mg, and bacitracin 200 IU daily for 4 days reduces pain and inflammation of the throat and lymph nodes when compared with placebo or disinfectant alone (964,968). It is unclear if these findings are due to papain, other ingredients, or the combination.
• Traumatic oral ulcers. Although there has been interest in using topical papain for traumatic oral ulcers, there is insufficient reliable information about the clinical effects of papain for this purpose.
• Venous leg ulcers. Although there has been interest in using topical papain for venous leg ulcers, there is insufficient reliable information about the clinical effects of papain for this purpose.
• Wound healing. Topical papain has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in patients with purulent wounds shows that applying papain 1% solution plus dimethylsulfoxide (DMSO) followed by phonophoresis, a process by which ultrasound is used to increase topical drug delivery, improves wound healing when compared to baseline (67843). The validity of this finding is limited by the lack of a comparator group. Also, it is unclear if these findings are due to papain, DMSO, or the combination. More evidence is needed to rate papain for these uses.

(Read more about PAPAIN)

Proteolytic enzymes represent a wide group of enzymes that are used alone or in combination. See specific monographs for effectiveness information.

(Read more about PROTEOLYTIC ENZYMES (PROTEASES))

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Colorectal cancer. A small clinical study in patients with colorectal cancer receiving chemotherapy shows that taking a specific combination supplement containing trypsin and other enzymes (Wobe-Mugos E) attenuates worsening quality of life, modestly increases relapse-free survival, and increases the number of patients surviving over 42 months (99474). The effects of trypsin alone are unclear.
• Diabetes. A small observational study in patients with a family history of type 1 diabetes found that taking a product containing trypsin 48 mg, bromelain 90 mg, and rutin 100 mg (Mucos Pharma) daily for 24 months is not associated with reduced incidence of type 1 diabetes at 8 years (99472). Further higher quality research is needed to draw a conclusion.
• Exercise-induced muscle soreness. A small clinical study shows that taking a combination protease tablet containing papain 50 mg, trypsin 75 mg, bromelain 50 mg, amylase 10 mg, lipase 10 mg, lysosome 10 mg, and chymotrypsin 2 mg, four times in one day before downhill running can improve recovery of contractile muscle function and decrease muscle soreness compared to placebo (67838). The effects of trypsin alone are unclear.
• Exercise-induced respiratory infections. A small clinical study in non-elite male runners shows that taking a combination product (Wobenzym Plus, Mucos Pharma) providing rutin 600-1200 mg, trypsin 288-576 mg, and bromelain 540-1080 mg daily for 3 weeks starting one week before a marathon, does not reduce the risk of a post-race upper respiratory tract infection when compared with placebo (96766). A limitation of this study is that it was not powered to detect a difference in exercise-induced infections between groups.
• Multiple sclerosis (MS). A preliminary clinical study in patients with relapsing-remitting MS shows that taking an enzyme combination containing trypsin 48 mg, bromelain 90 mg, and rutin 100 mg per tablet for at least 3 months does not affect disability progression, relapses or central nervous system lesions when compared with placebo (99468). The validity of these results are limited by the short duration of treatment, and the effects of trypsin alone are unclear.
• Osteoarthritis. Taking trypsin orally in combination with rutin and bromelain seems to be effective for treating osteoarthritis of the knee. Most clinical research in patients with knee osteoarthritis shows that taking the combination enzyme product (Wobenzym PS, formerly Phlogenzym, Mucos Pharma) at a dose providing up to 600 mg rutin, 288 mg trypsin, and 540 mg bromelain daily for 3-12 weeks, is as effective as diclofenac (Voltaren) 50 mg two to three times daily for relieving pain and improving knee function. This product also seems to reduce the need for rescue medication by 95% compared to placebo (6252,92235,99467,99477). It is unclear if these improvements are due to trypsin, other ingredients, or the combination. Trypsin has not been studied for osteoarthritis as a single-ingredient product.
• Postoperative swelling. A small preliminary clinical study in patients undergoing surgery of the jaw shows that taking an enzyme combination of trypsin 96 mg, bromelain 180 mg, and rutin 200 mg twice daily for 5 days in addition to standard treatment reduces soft-tissue thickness (indicating the amount of swelling) at most of the nine assessed facial-points compared to control (99476). This study is limited by its small size and significant differences in swelling at pre-determined points during the first postoperative day. This suggests that factors in addition to enzyme therapy might have influenced the differences in results.
• Radiation dermatitis. There is conflicting evidence whether taking a combination supplement containing trypsin reduces adverse effects from radiation. Some low quality clinical research in cancer patients receiving radiation therapy suggests that a specific combination product (Wobe-Mugos E, Mucos Pharma), which contains trypsin 40 mg, and other enzymes might reduce adverse reactions at the site of radiation, such as skin deterioration, when compared to no additional treatment (67831,99471). The results are these studies are limited by a lack of blinding and a lack placebo control. Evidence from another small, but higher quality clinical study shows that taking the same product beginning 3 days prior to radiation and continuing until the last day of radiation therapy does not reduce acute radiation-related complications such as skin deterioration when compared to placebo (67834).
• Sprains. A preliminary clinical study in patients with a sprained ankle shows that taking a specific enzyme combination (Phlogenzym, Mucos Pharma) containing trypsin 48 mg, bromelain 90 mg, rutin 100 mg, or taking different combinations of the individual enzymes three times daily for 10 days is not more effective for relieving pain than placebo (99473). The effects of trypsin alone are unclear.
• Wound healing. Some preliminary evidence suggests that applying trypsin topically in combination with chymotrypsin may be helpful for cleansing wounds of necrotic material and enhancing wound healing (715,716). Other preliminary research suggests that applying trypsin topically in combination with castor oil and Peru balsam may improve wound healing, including the healing of infected wounds. However, as a debriding agent, trypsin seems to be no better than mechanical gauze (99573). In fact, the US Food and Drug Administration (FDA) determined in the 1970s that trypsin is ineffective as a debriding agent (95757). There is insufficient reliable information available about the effectiveness of trypsin for these uses.

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POSSIBLY SAFE ...when used orally and appropriately. Doses up to 240 mg daily have been used safely for up to a year (6252,6253,10622,11457,18281,18284,91104,91105,91106,91111)(96449,103298). Higher doses up to 3200 mg daily have been used safely, short-term (18283,110546). ...when used topically and appropriately. Bromelain has been used safely as a debriding agent for up to 4 hours (18275,91113,103297,108148,108149).

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using.

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LIKELY SAFE ...when used ophthalmically, as approved by the US Food and Drug Administration (9).

POSSIBLY SAFE ...when used orally in combination with trypsin for up to 10 days (716). There is insufficient reliable information available about the safety of chymotrypsin when administered by other routes.

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using.

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There is insufficient reliable information available about the safety of lipase.

CHILDREN: POSSIBLY UNSAFE
when recombinant human bile salt-stimulated lipase (rhBSSL) is used orally by premature infants. Adding rhBSSL to infant formula or pasteurized breast milk increases the risk for serious gastrointestinal adverse effects in premature infants (101940).

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using.

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LIKELY SAFE ...when prescription pancreatic enzyme products are used orally and appropriately under the guidance of a healthcare professional (98667,98674,98676,98677,99115,99116,99118,99120,99122,99124)(99125,99126,99127). Prescription pancreatic enzyme products are typically initiated at a dose of 500-1000 lipase units/kg body weight per meal to a maximum of 2500 lipase units/kg body weight per meal or 4000 lipase units/gram of fat daily. Doses higher than 2500 lipase units/kg body weight per meal are prescribed only if medically necessary (99130).

POSSIBLY UNSAFE ...when prescription pancreatic enzyme products are used orally at doses over 2500 lipase units/kg body weight per meal or 10,000 lipase units/kg body weight daily. Higher doses, especially those greater than 6000 lipase units/kg body weight per meal, have been associated with fibrosing colonopathy (99130). There is insufficient reliable information available about the safety of supplemental forms of pancreatic enzyme products.

CHILDREN: LIKELY SAFE
when prescription pancreatic enzyme products are used orally and appropriately under the guidance of a healthcare professional (99118,99119,99120,99121,99122,99124,99125,99126). Prescription pancreatic enzyme products are usually initiated at a dose of 500-1000 lipase units/kg body weight per meal to a maximum of 2500 lipase units/kg body weight per meal or 4000 lipase units/gram fat daily. Doses higher than 2500 lipase units/kg body weight per meal are prescribed only if medically necessary (99130).

CHILDREN: POSSIBLY UNSAFE
when prescription pancreatic enzyme products are used orally at doses over 2500 lipase units/kg body weight per meal or 10,000 lipase units/kg body weight daily. Higher doses, especially those greater than 6000 lipase units/kg body weight per meal, have been associated with fibrosing colonopathy (99130). There is insufficient reliable information available about the safety of supplemental forms of pancreatic enzyme products.

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using unless essential for replacement therapy (15).

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LIKELY SAFE ...when used orally in amounts commonly found in foods. Papain has Generally Recognized as Safe (GRAS) status in the US (4912).

POSSIBLY SAFE ...when used orally and appropriately for medicinal purposes, short-term. Papain has been used in combination with other proteolytic enzymes at a dose of up to 1200 mg daily for up to 9 weeks (964,965,968,67831,67834). ...when used topically as a diluted solution in appropriate doses for up to 20 minutes (67835,67843,67845).

POSSIBLY UNSAFE ...when used orally in large amounts. In excessive doses, papain can cause significant side effects including esophageal perforation (6). ...when raw papain is used topically. Raw papain or papaya latex is a severe irritant and vesicant (6).

PREGNANCY: POSSIBLY UNSAFE
when used orally. There is some concern that crude papain is teratogenic and embryotoxic (6).

LACTATION:
Insufficient reliable information available; avoid using.

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POSSIBLY SAFE ...when used orally and appropriately. Various proteolytic enzymes have been safely used orally in clinical research (716,964,965,968,969,6252,6253,10622,11457,18281,18284) (91104,91105,91106,91111,96449). Side effects are typically mild to moderate and most often include gastrointestinal effects. See specific monographs for more detailed information related to the safety of individual proteolytic enzymes. ...when used topically and appropriately. Various proteolytic enzymes have been safely used topically in clinical research (67835,67843,67845,91113). Some proteolytic enzymes might cause allergic reactions when used topically. See specific monographs for more detailed information related to the safety of individual proteolytic enzymes.

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using.

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POSSIBLY SAFE ...when used topically by healthcare professionals trained in wound debridement (506). There is insufficient reliable information available about the safety of trypsin for its other uses. Although trypsin has been safely used in clinical research in doses of up to 288 mg orally daily in combination with other enzymes for up to 3 months, it is unclear if trypsin taken orally alone is safe (37193,92235,99473).

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using.

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ANTICOAGULANT/ANTIPLATELET DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = D Bromelain may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.  Details There is one case report of a patient experiencing minor bruising while taking bromelain with naproxen (14806). Bromelain is thought to have antiplatelet activity (10639,14806,18285,18286,37234). Whether this interaction is of concern with topical bromelain is unclear. Interference with coagulation of burn wounds has been reported in a patient receiving bromelain-based enzymatic debridement. However, observational research has found that topical bromelain debridement is not associated with increases or decreases in laboratory markers of coagulation when compared with surgical debridement (110547).

TETRACYCLINE ANTIBIOTICS Interaction Rating = Minor Be watchful with this combination. Severity = Mild •  Occurrence = Possible •  Level of Evidence = B Theoretically, bromelain might increase levels of tetracycline antibiotics.  Details Laboratory research suggests that bromelain might increase the absorption of tetracycline antibiotics. However, a study in healthy adults reported no difference in tetracycline plasma levels when a 500 mg dose was taken with or without bromelain 80 mg (14296).

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ACARBOSE (Precose, Prandase) Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, pancreatic enzyme products may reduce the effects of acarbose.  Details The digestive enzymes present in pancreatic enzyme products may break down acarbose, reducing its effects (9).

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WARFARIN (Coumadin) Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = D Theoretically, papain might increase the effects and side effects of warfarin.  Details In one case report, a patient previously stable on warfarin was found to have an international normalization ratio (INR) of 7.4, which was attributed to ingestion of a supplement containing papain from papaya extract (613).

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General ...Orally, bromelain seems to be well tolerated.
Most Common Adverse Effects:
Orally: Diarrhea, flatulence, gastric upset, headache.
Topically: Pruritus, urticaria.

Dermatologic ...Topically, bromelain may cause dermal allergic reactions including urticaria, pruritus, and skin swelling (9184). Redness, swelling, burning, pain at the application site, and cellulitis have also been reported rarely (108148,113513). In one case, a fixed drug eruption with pruritis near the groin was reported in a 33-year-old male taking bromelain 50 mg orally daily for 10 days. After discontinuation of bromelain and treatment with topical corticosteroid, the lesion resolved. Upon re-challenge with bromelain, the lesion reappeared in the same area (103300).
In another case report, a 61-year-old male with a history of chronic lower leg ulceration secondary to chronic venous hypertension and recurrent deep vein thrombosis on rivaroxaban presented with a deep-dermal burn on his lower calf. Bromelain-based topical enzymatic debridement agent Nexobrid 2 grams was applied to the burn site. Thirty minutes later, the patient experienced two instances of hemorrhage at the site of debridement. The patient was stabilized and treated with fluids, packed red cells, and tranexamic acid, and then the Nexobrid was removed (111656). Caution should be used in patients with underlying coagulopathies.

Gastrointestinal ...Orally, bromelain may cause gastrointestinal disturbances, including diarrhea, nausea, vomiting, flatulence, and abdominal pain (9184,18274,18282,96216,113513).

Immunologic ...Immunoglobulin E (IgE)-mediated allergic reactions to bromelain may occur (9184).
If inhaled, bromelain may cause sensitization and allergic reactions such as asthma (37199,37215,37233). In case reports of occupational inhalation of bromelain, additional allergic symptoms included difficulty swallowing, throat itching, eye irritation, and rhinitis (37214).

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General ...There is currently a limited amount of information available about the adverse effects of chymotrypsin. Orally, hypersensitivity reactions, including anaphylaxis, have been reported (9). When injected into the eye, chymotrypsin has been reported to cause increased intraocular pressure and uveitis (9,509).

Immunologic ...Rarely, chymotrypsin has been reported to cause anaphylactic reactions characterized by dyspnea, urticaria, edema, shock, vascular collapse, and unconsciousness, which can lead to death (9,509).

Ocular/Otic ...Intraocular injections of chymotrypsin have been reported to cause increased intraocular pressure, corneal edema, striation, uveitis, iridoplegia, and filamentary keratitis (9,509).

(Read more about CHYMOTRYPSIN)

General ...No adverse effects have been reported in adults. However, a thorough evaluation of safety outcomes has not been conducted.
Serious Adverse Effects (Rare):
Orally: Gastrointestinal adverse effects, such as necrotizing enterocolitis, when recombinant human bile salt-stimulated lipase is used in premature infants.

Gastrointestinal ...Orally, when added to the formula or pasteurized breast milk consumed by premature infants, recombinant human bile salt-stimulated lipase (rhBSSL) can cause gastrointestinal adverse effects, including abdominal distension, flatulence, constipation, colic, abdominal pain, gastroenteritis, vomiting, regurgitation, and rectal bleeding (101940). Premature infants receiving rhBSSL also had a slightly higher rate of necrotizing enterocolitis (NEC) when compared with those receiving placebo. After review by a panel of experts, it was determined that the rate of confirmed or suspected NEC in infants consuming rhBSSL was 3.3%, compared with 0.5% in those receiving placebo. Although this rate of NEC is lower than the historical rate of occurrence in premature infants (11%), a possible increased risk for NEC cannot be ruled out (101940).

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General ...Orally, prescription pancreatic enzyme products are generally well tolerated when used at prescribed doses in adults and children.
Most Common Adverse Effects:
Orally: Prescription pancreatic enzyme products can cause abdominal pain, constipation, diarrhea, dry mouth, flatulence, irritation of the skin around the mouth and anus, nausea, steatorrhea, and vomiting.
Topically: Pancreatic enzyme product powder is irritating to the skin, eyes, mucus membranes, and respiratory tract. Pancreatic enzyme products that are held in the mouth prior to swallowing can cause irritation of the mucosa, including ulceration and stomatitis.
Serious Adverse Effects (Rare):
Orally: Prescription pancreatic enzyme products can worsen glucose control. Extremely high doses have been associated with fibrosing colonopathy and high uric acid levels in blood and urine.
Topically: Inhalation of dust containing pancreatic enzyme products has been associated with asthma, bronchospasm, and pulmonary hypersensitivity reactions.

Dermatologic ...Orally, rash or skin conditions have been reported rarely in individuals taking prescription pancreatic enzyme products (67709,98667). A pruritic rash occurred in one patient taking a prescription pancreatic enzyme product in one clinical trial; this event was considered by the investigators to be possibly related to treatment (98667). Erythema also occurred in an 84-year-old patient who had taken a digestive enzyme supplement containing pancreatic enzymes and other enzymes (67709). In a case report, taking a supplemental form of pancreatic enzymes also containing hemicellulose and dried ox bile extract powder (Festal, Handok Inc) was thought to be the cause of an acute generalized exanthematous pustulosis (AGEP). The patient required an antihistamine and an oral and topical corticosteroid. Since this product contained more than one ingredient, the role of the pancreatic enzymes in this specific adverse event is unclear (98675).
Topically, exposure to pancreatic enzyme product powder is irritating to the skin. Hypersensitivity reactions such as skin rash have been reported (15).

Endocrine ...Orally, prescription pancreatic enzyme products may cause hypoglycemia or hyperglycemia in some patients (67622,98676,98677). In a double-blind trial of a prescription pancreatic enzyme product compared with placebo in patients with unresectable pancreatic cancer and associated pancreatic duct obstruction, one patient developed diabetes during the study period (67708).

Gastrointestinal ...Orally, prescription pancreatic enzyme products can cause abdominal pain, constipation, diarrhea, dry mouth, irritation of the skin around the mouth and anus, flatulence, nausea, steatorrhea, and vomiting. However, these symptoms can be controlled by following prescription dosing recommendations (67617,67618,67645,67648,67651,67653,67657,67666,67714,98667)(98676,99115,99117,99123,99130). Doses of higher than 2500 lipase units/kg body weight per meal are not recommended unless medically necessary in order to prevent serious side effects, including fibrosing colonopathy and colonic strictures. These side effects are associated with the higher doses of lipase in prescription pancreatic enzyme products (2382,67677,67678,67679,67680,67682,67689,67690,67696,67701,99130).
Topically, pancreatic enzyme products that are held in the mouth prior to swallowing can cause irritation of the mucosa, including ulceration and stomatitis (15).

Hematologic ...Orally, severe neutropenia has been reported with a pancreatic enzyme product. In one case report, a 61-year-old patient taking a prescription pancreatic enzyme product for chronic pancreatitis developed agranulocytosis that persisted despite a trial of filgrastim. Upon discontinuation of the pancreatic enzyme product, marked improvement in neutropenia occurred within 7 days, with full resolution within 6 weeks (107411).

Neurologic/CNS ...Orally, headache and dizziness have been reported rarely in individuals taking prescription pancreatic enzyme products (67618,98667,99120).

Ocular/Otic ...Topically, exposure to pancreatic enzyme product powder is irritating to the eyes. Hypersensitivity reactions such as watery eyes have been reported (15).

Pulmonary/Respiratory ...Topically, exposure to pancreatic enzyme product powder is irritating to the respiratory tract. Hypersensitivity reactions such as sneezing have been reported (15). Inhalation of dust containing pancreatic enzyme products has been associated with allergic rhinitis, asthma, bronchospasm, and pulmonary hypersensitivity reactions (11768,11769,67641).

Renal ...Orally, extremely high doses of pancreatic enzyme products containing more than 10,000 lipase units/kg body weight daily have been associated with high uric acid levels in blood and urine (67673,67693,67705). Rarely, kidney pain has been reported (98667).

(Read more about PANCREATIC ENZYME PRODUCTS)

General ...Orally and topically, papain seems to be well tolerated when used short-term at appropriate doses. Taking high oral doses may be unsafe.
Most Common Adverse Effects:
Orally: Allergic reactions in sensitive individuals.
Topically: Urticaria and pruritus in sensitive individuals.
Serious Adverse Effects (Rare):
Orally: Esophageal perforation and severe gastritis with high doses.

Dermatologic ...Topically, papain can cause itching (966). Urticarial reactions and itching have been reported in people occupationally exposed to papain, with papain confirmed as the causative agent by skin prick tests or radioallergosorbent tests (RAST) (95533,95534). In a randomized controlled trial assessing the effects of papain, trypsin, and chymotrypsin on adverse effects from radiotherapy, moderate to severe epitheliolysis was more frequent in the enzyme-treated group than the placebo group (67834). It is unclear if this adverse effect is due to papain, other enzymes, or the combination.

Gastrointestinal ...Orally, papain has been associated with diarrhea. In a randomized controlled trial assessing the effects of papain, trypsin, and chymotrypsin on adverse effects from radiotherapy, moderate to severe diarrhea was more frequent in the enzyme-treated group than the placebo group (67834). However, it is unclear if this adverse effect is due to papain, other enzymes, or the combination. Papain has also been associated with gastric ulcers and esophageal perforation in case reports of phytobezoars treated with papain (67848). In general, large amounts of papain can cause esophageal perforation (6). Ingestion of papaya latex (raw papain) can cause severe gastritis.

Genitourinary ...Orally, papain has been associated with hypernatremia in case reports of phytobezoars treated with papain (67848).

Immunologic ...Orally, papain may cause allergic reactions, including itchy watery eyes, runny nose, sneezing, abdominal cramps, sweating, and diarrhea, in individuals sensitive to papain (6,967). Occupational exposure to airborne papain dust may also cause respiratory allergic reactions (95532,95533,95534,95535,95536).

Pulmonary/Respiratory ...Occupational exposure to airborne papain dust may cause respiratory allergic reactions. Symptoms include rhinitis, sneezing, conjunctivitis, dyspnea, wheezing, cough, and asthma. In most cases, papain is confirmed as the causative agent by skin prick tests, radioallergosorbent tests (RAST), or detection of papain-specific immunoglobulin E (IgE) and IgG (95532,95533,95534,95535,95536).

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General ...Orally, proteolytic enzymes are generally well tolerated. See specific monographs for detailed safety information related to individual proteolytic enzymes.
Most Common Adverse Effects:
Orally: Gastrointestinal upset.
Serious Adverse Effects (Rare):
Topically: Allergic reactions.

Gastrointestinal ...Orally, some patients taking proteolytic enzymes may have gastrointestinal complaints (101517).

Immunologic ...Proteolytic enzymes are commonly found in laundry detergents and pre-spotter products. Rarely, protease specific IgE positive tests possibly related to these products have occurred. Exposure may be airborne or topical (102705). In addition, in case reports, occupational exposure to the airborne proteolytic enzyme pepsin has resulted in allergic rhinoconjunctivitis or asthma (102706,102707).

(Read more about PROTEOLYTIC ENZYMES (PROTEASES))

General ...Topically, trypsin can cause localized pain and transient burning (506). Orally, trypsin taken in combination with other enzymes can cause mild-to-moderate gastrointestinal symptom such as nausea, heartburn, and stomach pain (37193,92235). It is not known if trypsin or other enzymes causes these adverse effects.

Dermatologic ...Topically, trypsin can cause localized pain and transient burning (506).

Gastrointestinal ...Orally, trypsin taken in combination with other enzymes can cause mild-to-moderate gastrointestinal symptom such as nausea, heartburn, and stomach pain (37193,92235). It is not known if trypsin or other enzymes causes these adverse effects.

(Read more about TRYPSIN)