Irish Sea Moss by eXplicit Supplements

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Dental plaque. It is unclear if oral Ascophyllum nodosum is beneficial in patients with dental plaque. Details: A small crossover study in adults with moderate to heavy calculus formation shows that taking a specific brand of Ascophyllum nodosum capsules (ProDen PlaqueOff, SDC Swedencar eAB) 500 mg daily for 6 months reduces the buildup of supragingival calculus by 52% when compared with placebo. The buildup of plaque was reduced by 19% in males, but was not reduced in females, when compared with placebo (94996).
• Gastroesophageal reflux disease (GERD). Although there has been interest in using oral Ascophyllum nodosum for GERD, there is insufficient reliable information about the clinical effects of Ascophyllum nodosum for this purpose.
• Gingivitis. It is unclear if oral Ascophyllum nodosum is beneficial in patients with dental plaque. Details: A small crossover study in adults with moderate to heavy calculus formation shows that taking a specific brand of Ascophyllum nodosum capsules (ProDen PlaqueOff, SDC Swedencar eAB) 500 mg daily for 6 months does not reduce gingivitis when compared with placebo (94996).
• Impaired glucose tolerance (prediabetes). Oral Ascophyllum nodosum has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in adults with prediabetes that are overweight or obese shows that taking a specific product (InSea2, InnoVactiv Inc.) containing 500 mg of Ascophyllum nodosum and Fucus vesiculosus extracts daily for 12 weeks reduces postprandial blood glucose but does not improve fasting blood glucose, glycated hemoglobin (HbA1c), body weight, lipids, or blood pressure when compared with placebo (110560).
• Inflammatory bowel disease (IBD). Although there has been interest in using oral Ascophyllum nodosum for IBD, there is insufficient reliable information about the clinical effects of Ascophyllum nodosum for this purpose.
• Iodine deficiency. It is unclear if oral Ascophyllum nodosum is beneficial in patients with iodine deficiency. Details: Ascophyllum nodosum contains iodine, and there is interest in its use for patients with iodine deficiency. A small clinical study in females with iodine insufficiency shows that taking a specific brand of Ascophyllum nodosum capsules (Napiers Hebridean Seagreens (NaHS), Seagreens Ltd) 500 mg daily for 14 days increases urinary iodine excretion by almost three-fold and increases thyroid stimulating hormone levels by 36% when compared with baseline (94997). The validity of these findings is limited by the lack of a control group.
• Metabolic syndrome. Oral Ascophyllum nodosum has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Observational research in adults with one or more components of metabolic syndrome has found that taking a specific combination product (Gdue, Aesculapius) containing extracts of Ascophyllum nodosum and Fucus vesiculosus in a 95:5 ratio along with chromium picolinate two to three times daily with meals for around 6 months is associated with reductions in body weight by 7.3 kg, waist circumference by 7.5 cm, fasting blood glucose by 16 mg/dL, glycated hemoglobin (HbA1c) by 0.55%, systolic blood pressure by 7 mmHg, diastolic blood pressure by 4 mmHg, low-density lipoprotein (LDL) cholesterol by 18 mg/dL, and 10-year cardiovascular risk scores by 1.8% when compared to baseline (110559). It is unclear if these effects are due to Ascophyllum nodosum, Fucus vesiculosus, or the combination. Further, the validity of these findings is limited by a lack of control group.
• Obesity. Oral Ascophyllum nodosum has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in adults with prediabetes that are overweight or obese shows that taking a specific product (InSea2, InnoVactiv Inc.) containing 500 mg of Ascophyllum nodosum and Fucus vesiculosus extracts daily for 12 weeks does not reduce body weight, body mass index (BMI), body fat, lipids, blood pressure, or measures of glycemic control when compared with placebo (110560).
• Peptic ulcers. Although there has been interest in using oral Ascophyllum nodosum for peptic ulcers, there is insufficient reliable information about the clinical effects of Ascophyllum nodosum for this purpose. More evidence is needed to rate Ascophyllum nodosum for these uses.

(Read more about ASCOPHYLLUM NODOSUM)

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Allergic rhinitis (hay fever). Although there has been interest in using oral black pepper for allergic rhinitis, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Asthma. Although there has been interest in using oral black pepper for asthma, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Athletic performance. Oral black pepper has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: One small clinical trial in untrained males shows that taking a supplement containing black pepper extract 10 mg, caffeine 400 mg, capsicum extract 66.7 mg, and niacin 40 mg as a single dose prior to exercise does not improve strength, time to exhaustion, or maximal oxygen consumption when compared with placebo (37873).
• Depression. Although there has been interest in using oral black pepper for depression, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Diarrhea. Although there has been interest in using oral black pepper for diarrhea, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Dysmenorrhea. Although there has been interest in using oral black pepper for dysmenorrhea, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Dyspepsia. Although there has been interest in using oral black pepper for dyspepsia, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Fall prevention. It is unclear if inhaling black pepper oil as aromatherapy is beneficial for fall prevention in older adults. Details: One small clinical study in older adults shows that applying black pepper oil near the right side of the nose as an olfactory stimulant improves stability while the eyes are closed during a one-minute trial when compared with the application of water. The improvement with black pepper oil is comparable to the improvement seen with the application of lavender oil (29160). It is unclear if any benefit persists after inhalation of black pepper oil.
• Fatigue. It is unclear if oral black pepper is beneficial in patients with fatigue. Details: One small clinical trial in adults with below-average energy levels shows that taking black pepper 2 grams as a single dose does not improve sustained attention, motivation to perform cognitive tasks, or feelings of mental energy and mental fatigue when compared with placebo (91731).
• Flatulence. Although there has been interest in using oral black pepper for flatulence, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Headache. Although there has been interest in using oral black pepper for headache, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Insect bite. Topical black pepper has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: One small clinical trial shows that applying a specific product (Trikatu) containing black pepper, long pepper, and ginger, as well as camphor, eucalyptus oil, and menthol, directly to mosquito bites does not reduce papule size, erythema, edema, or pruritis when compared with a control compound containing the same base ingredients but without the pepper and ginger components (89893).
• Obesity. Although there has been interest in using oral black pepper for obesity, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Pain (chronic). Although there has been interest in using topical black pepper for chronic pain related to various etiologies, including osteoarthritis, postherpetic neuralgia, and peripheral neuropathy, there is insufficient reliable information about the clinical effects of black pepper for these conditions.
• Rhinosinusitis. Although there has been interest in using oral black pepper for rhinosinusitis, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Sexual desire. Although there has been interest in using oral black pepper for increasing sexual desire, there is insufficient reliable information about the clinical effects of black pepper for this purpose.
• Smoking cessation. It is unclear if inhaling black pepper essential oil as aromatherapy is effective for smoking cessation. Details: One small clinical trial in adult male smokers who were deprived from smoking overnight shows that inhaling a vapor from the essential oil of black pepper, as needed over a 3-hour period, reduces cigarette cravings, negative feelings, and anxiety when compared with a placebo vapor (29159). Another small clinical study in patients addicted to dipping, chewing, or smoking tobacco shows that placing a drop of black pepper essential oil on tissue paper and inhaling for 2 minutes at least three times a day for 3 days reduces nicotine cravings when compared to baseline (90502).
• Swallowing dysfunction. It is unclear if inhaling black pepper oil as aromatherapy is beneficial in patients with swallowing dysfunction. Details: One small clinical study in post-stroke residents of nursing homes shows that one minute of olfactory stimulation with black pepper oil before each meal for 30 days decreases swallowing reflex latency by 11 seconds and increases the number of swallowing movements by 3.3 when compared to baseline (29161). A small clinical trial in children with neurological disorders who were on long-term enteral nutrition shows that applying black pepper oil to the nostrils or nasal cavity for one minute improves the amount of oral intake and swallowing movement in 63% of patients. Although oral intake increased, the need for enteral nutrition was not eliminated (29162).
• Vitiligo. It is unclear if topical piperine oil, a constituent of black pepper, is beneficial in patients with vitiligo. Details: A small clinical study in patients with vitiligo shows that applying piperine oil 1% daily in addition to receiving narrowband ultraviolet B (NB-UVB) light therapy every other day for 3 months improves repigmentation more rapidly when compared with using NB-UVB alone (103820). More evidence is needed to rate black pepper for these uses.

(Read more about BLACK PEPPER)

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Acne. Although there is interest in using topical burdock for acne, there is insufficient reliable information about the clinical effects of burdock for this purpose.
• Aging skin. It is unclear if topical burdock is beneficial for reducing wrinkles. Details: A very small study in females aged 39-65 years shows that applying an emulsion containing burdock fruit extract 1.2% to the face twice daily for 4 weeks slightly reduces skin wrinkles around the eyes when compared with placebo (37420).
• Atopic dermatitis (eczema). Although there is interest in using topical burdock for eczema, there is insufficient reliable information about the clinical effects of burdock for this condition.
• Breast cancer. Oral burdock root has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Population research in breast cancer patients has found that using a specific product containing burdock root, sheep sorrel, slippery elm bark, and Indian rhubarb (Essiac, Resperin Canada Limited) is not associated with improved quality of life when compared with no intervention (37419).
• Common cold. Although there is interest in using oral burdock for symptoms of the common cold, there is insufficient reliable information about the clinical effects of burdock for this condition.
• Diabetes. Although there is interest in using oral burdock for diabetes, there is insufficient reliable information about the clinical effects of burdock for this condition.
• Diverticulitis. It is unclear if oral burdock is beneficial in patients with diverticulitis. Details: A small open-label clinical study in patients with colonic diverticulitis shows that taking burdock tea (Ajikan, Co., Ltd.) providing 1.5 grams three times daily for a median of 26 months is associated with an acute diverticulitis recurrence rate of 11%, compared with 32% of those not taking burdock tea. Furthermore, the recurrence-free duration was increased by about 14 months. However, taking burdock tea for a median of 16 months does not prevent colonic diverticular bleeding recurrence (102696).
• Dry skin. Although there is interest in using topical burdock for dry skin, there is insufficient reliable information about the clinical effects of burdock for this purpose.
• Gout. Although there is interest in using oral burdock for gout, there is insufficient reliable information about the clinical effects of burdock for this condition.
• Hepatitis. Although there is interest in using oral burdock for hepatitis, there is insufficient reliable information about the clinical effects of burdock for this condition.
• Metabolic syndrome. It is unclear if oral burdock is beneficial in patients with metabolic syndrome. Details: A very small clinical study in patients with metabolic syndrome shows that drinking burdock extract 100 mL three times daily after meals for 16 weeks does not reduce body weight, abdominal fat, blood pressure, lipid levels, or glucose when compared with baseline or control (105667).
• Obesity. Although there is interest in using oral burdock for obesity, there is insufficient reliable information about the clinical effects of burdock for this condition.
• Urinary tract infections (UTIs). Although there is interest in using oral burdock for UTI, there is insufficient reliable information about the clinical effects of burdock for this condition.
• Vaginitis. Topical burdock has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Observational research in adults and children with vaginitis has found that applying a specific solution containing burdock, chamomile, and aloe (Zelesse, ITF Research Pharma S.L.U., Alcobendas) to the vaginal area once or twice daily for 5-20 days is associated with moderate improvements in symptoms such as pruritus, erythema, and discharge when compared with baseline (102695,102697). The validity of this finding is limited by its observational nature and the lack of a control group. More evidence is needed to rate burdock for these uses.

(Read more about BURDOCK)

POSSIBLY INEFFECTIVE

• Human papillomavirus (HPV). Topical carrageenan gel does not seem to reduce the risk of anal HPV in males who have sex with males. Details: A clinical study in adult males who have sex with males shows that applying 15 mL of carrageenan 1.4% gel to the anus, condom, or partners' penis prior to receptive anal intercourse does not decrease the rate of anal HPV when compared with placebo, regardless of HPV strain, HPV vaccination status, or HIV status. Although patients were enrolled for an intended duration of 1 year, the study was terminated early due to a lack of observed benefit and potential safety concerns, resulting in a median follow-up of 8 months. A total of 60% of patients in the treatment group reported adverse effects, compared with 40% of patients in the placebo group (107851). Additionally, the prevalence of HPV at baseline was 61%, which may have reduced the study's ability to identify an effect.

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Common cold. Evidence on the use of intranasal iota-carrageenan for improving symptoms of the common cold is conflicting. Details: A small clinical study in patients with early symptoms of the common cold shows that spraying a saline solution containing iota-carrageenan 0.12% into the nose three times daily for 4 days seems to reduce total symptoms during days 2-4 when compared with using a plain saline spray. However, in a larger clinical trial using the same methods, there were no differences between placebo and treatment groups. Furthermore, neither study noted an improvement in total cold symptoms over 7-10 days (99449,99450). In children with the common cold, spraying a saline solution containing iota-carrageenan 0.12% seemed to be no better for improving cold symptoms than using plain saline spray (99451). Some research suggests that carrageenan might benefit patients with a confirmed viral infection. In a clinical study in patients with symptoms of a common cold and a laboratory-confirmed viral infection, using a specific nasal spray (Coldamaris) containing carrageenan 0.12% three times daily for 7 days reduced symptom duration by about 2 days when compared with using a saline nasal spray. However, there was no difference in disease duration when all patients were considered, regardless of viral infection status (99452). Furthermore, the validity of this study is limited by the changing definitions for disease duration and primary outcome over the course of the study.
• Coronavirus disease 2019 (COVID-19). There is limited evidence on the intranasal use of iota-carrageenan for the prevention of COVID-19. Details: A clinical study in healthcare professionals working with patients hospitalized for COVID-19 shows that using a nasal spray containing iota-carrageenan 0.17% as 1 puff in each nostril 4 times daily (providing 1 mg daily) for 21 days decreases the absolute rate of confirmed, symptomatic COVID-19 to 1%, compared with 5% of patients in the placebo group. This suggests that 25 people would need to use this nasal spray to prevent one infection (107852). The validity of this study is limited due to the lack of baseline viral testing and short duration; additionally, asymptomatic COVID-19 infections may be underreported due to study design.
• Cough. Although there is interest in using oral carrageenan for cough, there is insufficient reliable information about the clinical effects of carrageenan for this condition. More evidence is needed to rate the effectiveness of carrageenan for these uses.

(Read more about CARRAGEENAN)

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Aging skin. Although there has been interest in using topical Fucus vesiculosus for aging skin, there is insufficient reliable information about the clinical effects of Fucus vesiculosus for this purpose.
• Cardiovascular disease (CVD). Although there has been interest in using oral Fucus vesiculosus for CVD, including atherosclerosis and hypertension, there is insufficient reliable information about the clinical effects of Fucus vesiculosus for this purpose.
• Constipation. Although there has been interest in using oral Fucus vesiculosus for constipation, there is insufficient reliable information about the clinical effects of Fucus vesiculosus for this purpose.
• Diarrhea. Although there has been interest in using oral Fucus vesiculosus for diarrhea, there is insufficient reliable information about the clinical effects of Fucus vesiculosus for this purpose.
• Dyspepsia. Although there has been interest in using oral Fucus vesiculosus for dyspepsia, there is insufficient reliable information about the clinical effects of Fucus vesiculosus for this purpose.
• Hypercholesterolemia. It is unclear if oral Fucus vesiculosus is beneficial in hypercholesterolemia. Details: A small clinical study in patients with obesity or overweight and low-density lipoprotein (LDL) cholesterol levels exceeding 77 mg/dL shows that taking a polyphenol-rich extract of Fucus vesiculosus (Maritech Synergy, Marinova) 2000 mg, providing 560 mg of polyphenols, daily for 12 weeks increases levels of high-density lipoprotein (HDL) cholesterol by 10%, compared with 2% in those receiving placebo. No differences were observed for total cholesterol, LDL cholesterol, or triglycerides (106723).
• Hypothyroidism. Although there has been interest in using oral Fucus vesiculosus for hypothyroidism, there is insufficient reliable information about the clinical effects of Fucus vesiculosus for this purpose.
• Impaired glucose tolerance (prediabetes). Oral Fucus vesiculosus has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in patients with prediabetes and dysglycemia shows that taking a specific product (Gdue, Aesculapius), containing extracts of Fucus vesiculosus and Ascophyllum nodosum in a 5:95 ratio along with chromium picolinate three times daily for 6 months reduces fasting and postprandial blood glucose, glycated hemoglobin (HbA1c), insulin, and insulin resistance when compared with placebo (100847). It is unclear if these effects are due to Fucus vesiculosus, other ingredients, or the combination. Another small clinical study in adults with prediabetes and also overweight or obese shows that taking a specific product (InSea2, InnoVactiv Inc.) containing 500 mg of Fucus vesiculosus and Ascophyllum nodosum extracts daily for 12 weeks reduces postprandial blood glucose but does not improve fasting blood glucose, HbA1c, body weight, lipids, or blood pressure when compared with placebo (110560).
• Iodine deficiency. Although there has been interest in using oral Fucus vesiculosus for iodine deficiency and goiter, there is insufficient reliable information about the clinical effects of Fucus vesiculosus for this purpose.
• Metabolic syndrome. Oral Fucus vesiculosus has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Observational research in adults with one or more components of metabolic syndrome has found that taking a specific combination product (Gdue, Aesculapius) containing extracts of Fucus vesiculosus and Ascophyllum nodosum in a 5:95 ratio along with chromium picolinate two to three times daily with meals for around 6 months is associated with reductions in body weight by 7.3 kg, waist circumference by 7.5 cm, fasting blood glucose by 16 mg/dL, glycated hemoglobin (HbA1c) by 0.55%, systolic blood pressure by 7 mmHg, diastolic blood pressure by 4 mmHg, low-density lipoprotein (LDL) cholesterol by 18 mg/dL, and 10-year cardiovascular risk scores by 1.8% when compared to baseline (110559). It is unclear if these effects are due to Fucus vesiculosus, other ingredients, or the combination. Further, the validity of these findings is limited by a lack of control group.
• Obesity. Oral Fucus vesiculosus has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in moderately overweight females shows that seaweeds such as Fucus vesiculosus, taken in combination with lecithin and vitamins for up to 2 years, do not result in sustained weight loss when compared to baseline (13663). Another small clinical study in adults with prediabetes and also overweight or obese shows that taking a specific product (InSea2, InnoVactiv Inc.) containing 500 mg of Fucus vesiculosus and Ascophyllum nodosum extracts daily for 12 weeks does not reduce body weight, body mass index (BMI), body fat, lipids, blood pressure, or measures of glycemic control when compared with placebo (110560).
• Wound healing. Although there has been interest in using topical Fucus vesiculosus for wound healing, there is insufficient reliable information about the clinical effects of Fucus vesiculosus for this purpose. More evidence is needed to rate Fucus vesiculosus for these uses.

(Read more about FUCUS VESICULOSUS)

POSSIBLY SAFE ...when used orally, short-term. Ascophyllum nodosum dried powder has been used with apparent safety at a dose of up to 500 mg daily for up to 6 months (94996,94997,103900). However, marine products such as Ascophyllum nodosum are known to accumulate heavy metals such as arsenic (94997,94999). Some supplement products are prospectively analyzed to confirm a lack of contaminants and that heavy metal levels are below threshold (94997).

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using amounts greater than those found in food.

(Read more about ASCOPHYLLUM NODOSUM)

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

POSSIBLY SAFE ...when black pepper oil is applied topically. Black pepper oil is nonirritating to the skin and is generally well tolerated (11). ...when black pepper oil is inhaled through the nose or as a vapor through the mouth, short-term. Black pepper oil as a vapor or as an olfactory stimulant has been used with apparent safety in clinical studies for up to 3 days and 30 days, respectively (29159,29160,29161,90502). There is insufficient reliable information available about the safety of black pepper when used orally in medicinal amounts.

CHILDREN: LIKELY SAFE
when used orally in amounts commonly found in foods (11).

CHILDREN: POSSIBLY UNSAFE
when used orally in large amounts. Fatal cases of pepper aspiration have been reported in some patients (5619,5620). There is insufficient reliable information available about the safety of topical pepper oil when used in children.

PREGNANCY: LIKELY SAFE
when used orally in amounts commonly found in foods (11).

PREGNANCY: LIKELY UNSAFE
when used orally in large amounts. Black pepper might have abortifacient effects (11,19); contraindicated. There is insufficient reliable information available about the safety of topical pepper when used during pregnancy.

LACTATION: LIKELY SAFE
when used orally in amounts commonly found in foods (11). There is insufficient reliable information available about the safety of black pepper when used in medicinal amounts during breast-feeding.

(Read more about BLACK PEPPER)

LIKELY SAFE ...when used in amounts commonly found in foods (12659,12660). Burdock root is commonly eaten as a vegetable (37422,92153,92154)

POSSIBLY SAFE ...when used topically, short-term. An emulsion containing burdock fruit extract 1.2% has been safely applied to the face twice daily for 4 weeks (37420). There is insufficient reliable information available about the safety of burdock when used orally in supplemental doses.

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

(Read more about BURDOCK)

LIKELY SAFE ...when undegraded carrageenan is used orally in the amounts found in foods (11). Carrageenan has Generally Recognized as Safe (GRAS) status in the US (4912,102538).

POSSIBLY SAFE ...when used intranasally, short-term. Saline solution containing iota-carrageenan 0.12% has been sprayed into the nose with apparent safety three times daily for up to 7 days (99449,99450,99451,99452,99466). Also, saline solution containing iota-carrageenan 0.17% has been sprayed into both nostrils with apparent safety four times daily (providing 1 mg daily) for up to 21 days (107852).

POSSIBLY UNSAFE ...when the degraded form, called poligeenan, is used orally. Poligeenan contains a lower molecular weight product that is partially absorbed. There is concern about the safety of this form because it has been linked to colonic lesions, neoplasms, and bleeding in animals (40065,40047). Due to public concern that commercial carrageenan contains poligeenan or can be degraded to poligeenan in the stomach, the United States Food and Drug Administration (FDA) reevaluated the safety of carrageenan and reaffirmed its status as GRAS in 2012 (99466). Carrageenan that is not degraded has an average molecular weight of 453-652 kDA, while degraded carrageenan is usually 20-30 kDA. In order to limit potential safety concerns, the European Commission Scientific Committee on Food advises that the total weight of any carrageenan food additives contain no more than 5% of a molecular weight below 50 kDa (99901). There is insufficient reliable information available about the safety of carrageenan when used topically.

PREGNANCY AND LACTATION: LIKELY SAFE
when used in food amounts (11). There is insufficient reliable information available about the safety of using larger amounts; avoid using.

(Read more about CARRAGEENAN)

POSSIBLY SAFE ...when applied topically to the skin. A gel containing 1% Fucus vesiculosus extract, applied to the skin twice daily, has been used in clinical research with apparent safety for up to 5 weeks (12799).

POSSIBLY UNSAFE ...when used orally due to its iodine content and possible heavy metal content. Fucus vesiculosus contains up to 0.05% iodine or 226 mcg/gram dry weight (12789,74217). Ingesting more than 150 mcg of iodine daily can cause hyperthyroidism or exacerbate existing hyperthyroidism (12788). Fucus vesiculosus can also contain heavy metals, including cadmium, arsenic, and lead, and can cause heavy metal nephropathy (12789,12800,74213).

PREGNANCY AND LACTATION: POSSIBLY UNSAFE
when used orally because it may contain iodine and heavy metals (12789,74213,74217); avoid using.

(Read more about FUCUS VESICULOSUS)

AMIODARONE (Cordarone) Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = D Theoretically, combining Ascophyllum nodosum with amiodarone might cause excessively high iodine levels.  Details Ascophyllum nodosum contains iodine (94997,95000,95102), although the bioavailability of iodine from Ascophyllum nodosum is lower than that of potassium iodide (94997). Amiodarone contains 37.3% iodine and can increase iodine levels. Concomitant use might increase the risk of having excessive iodine levels and adversely affecting thyroid function (7135,17574). Monitor thyroid function.

ANTITHYROID DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Due to its iodine content, Ascophyllum nodosum might alter the effects of antithyroid drugs.  Details Ascophyllum nodosum contains iodine (94997,95000,95102), although the bioavailability of iodine from Ascophyllum nodosum is lower than that of potassium iodide (94997). Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking Ascophyllum nodosum while using antithyroid drugs could alter the effects of the antithyroid drugs (17574).

THYROID HORMONE Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Due to its iodine content, Ascophyllum nodosum might alter the effects of thyroid hormone.  Details Ascophyllum nodosum contains iodine (94997,95000,95102), although the bioavailability of iodine from Ascophyllum nodosum is lower than that of potassium iodide (94997). Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking Ascophyllum nodosum while using thyroid hormone could alter the effects of thyroid hormone (17574).

(Read more about ASCOPHYLLUM NODOSUM)

AMOXICILLIN (Amoxil, Trimox) Interaction Rating = Minor Be watchful with this combination. Severity = Mild •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase the effects and side effects of amoxicillin.  Details Animal research shows that taking piperine, a constituent of black pepper, with amoxicillin increases plasma levels of amoxicillin (29269). This has not been reported in humans.

ANTICOAGULANT/ANTIPLATELET DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase the risk of bleeding when taken with antiplatelet or anticoagulant drugs.  Details In vitro research shows that piperine, a constituent of black pepper, seems to inhibit platelet aggregation (29206). This has not been reported in humans.

ANTIDIABETES DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase the risk of hypoglycemia when taken with antidiabetes drugs.  Details Animal research shows that piperine, a constituent of black pepper, can reduce blood glucose levels (29225). Monitor blood glucose levels closely. Dose adjustments might be necessary.

ATORVASTATIN (Lipitor) Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase blood levels of atorvastatin.  Details Animal research shows that taking piperine, a constituent of black pepper, 35 mg/kg can increase the maximum serum concentration of atorvastatin three-fold (104188). This has not been reported in humans.

CARBAMAZEPINE (Tegretol) Interaction Rating = Minor Be watchful with this combination. Severity = Mild •  Occurrence = Possible •  Level of Evidence = B Theoretically, black pepper might increase blood levels of carbamazepine, potentially increasing the effects and side effects of carbamazepine.  Details One clinical study in patients taking carbamazepine 300 mg or 500 mg twice daily shows that taking a single 20 mg dose of purified piperine, a constituent of black pepper, increases carbamazepine levels. Piperine may increase carbamazepine absorption by increasing blood flow to the GI tract, increasing the surface area of the small intestine, or inhibiting cytochrome P450 3A4 (CYP3A4) in the gut wall. Absorption was significantly increased by 7-10 mcg/mL/hour. The time to eliminate carbamazepine was also increased by 4-8 hours. Although carbamazepine levels were increased, this did not appear to increase side effects (16833). In vitro research also shows that piperine can increase carbamazepine levels by 11% in a time-dependent manner (103819).

CYCLOSPORINE (Neoral, Sandimmune) Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase the effects and side effects of cyclosporine.  Details In vitro research shows that piperine, a constituent of black pepper, increases the bioavailability of cyclosporine (29282). This has not been reported in humans.

CYTOCHROME P450 1A1 (CYP1A1) SUBSTRATES Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase levels of drugs metabolized by CYP1A1.  Details In vitro research suggests that piperine, a constituent of black pepper, inhibits CYP1A1 (29213). This has not been reported in humans.

CYTOCHROME P450 2B1 (CYP2B1) SUBSTRATES Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase levels of drugs metabolized by CYP2B1.  Details In vitro research suggests that piperine, a constituent of black pepper, inhibits CYP2B1 (29332). This has not been reported in humans.

CYTOCHROME P450 2D6 (CYP2D6) SUBSTRATES Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase levels of drugs metabolized by CYP2D6.  Details In vitro research suggests that some constituents of black pepper inhibit CYP2D6 (29207,29212,38375). This has not been reported in humans.

CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase levels of drugs metabolized by CYP3A4.  Details In vitro research shows that piperine, a constituent of black pepper, as well as the pepper fruit seem to inhibit CYP3A4 (14375,29212). This has not been reported in humans.

LITHIUM Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = D Theoretically, black pepper might increase blood levels of lithium due to its diuretic effects. The dose of lithium might need to be reduced.  Details Black pepper is thought to have diuretic properties (11).

NEVIRAPINE (Viramune) Interaction Rating = Moderate Be cautious with this combination. Severity = Mild •  Occurrence = Probable •  Level of Evidence = D Black pepper might increase blood levels of nevirapine.  Details Clinical research shows that piperine, a constituent of black pepper, increases the plasma concentration of nevirapine. However, no adverse effects were observed in this study (29209).

P-GLYCOPROTEIN SUBSTRATES Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase levels of P-glycoprotein substrates.  Details In vitro research shows that piperine, a constituent of black pepper, seems to inhibit P-glycoprotein (14375,29281,29283).

PENTOBARBITAL (Nembutal) Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = D Theoretically, black pepper might increase the sedative effects of pentobarbital.  Details Animal research shows that piperine, a constituent of black pepper, increases pentobarbital-induced sleeping time (29214).

PHENYTOIN (Dilantin) Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = B Black pepper might increase blood levels of phenytoin.  Details Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption, slow elimination, and increase levels of phenytoin (537,14442). Taking a single dose of black pepper 1 gram along with phenytoin seems to double the serum concentration of phenytoin (14375). Consuming a soup with black pepper providing piperine 44 mg/200 mL of soup along with phenytoin also seems to increase phenytoin levels when compared with consuming the same soup without black pepper (14442).

PROPRANOLOL (Inderal) Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = B Black pepper might increase blood levels of propranolol.  Details Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption and slow elimination of propranolol (538).

RIFAMPIN (Rifadin) Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = B Black pepper might increase blood levels of rifampin.  Details Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption and serum levels of rifampin (14375,29284).

THEOPHYLLINE Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = D Black pepper might increase blood levels of theophylline.  Details Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption and slow elimination of theophylline (538).

(Read more about BLACK PEPPER)

ANTICOAGULANT/ANTIPLATELET DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = D Theoretically, taking burdock with anticoagulant or antiplatelet drugs might increase the risk of bleeding.  Details In vitro research shows that lignans from burdock reduce rabbit platelet aggregation by inhibiting platelet activating factor (12619). This interaction has not been reported in humans.

(Read more about BURDOCK)

ANTICOAGULANT/ANTIPLATELET DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = D Theoretically, carrageenan may increase the risk of bleeding in patients taking anticoagulant or antiplatelet drugs.  Details Laboratory research suggests that carrageenan has anticoagulant effects (6002). However, this has not been reported in humans.

(Read more about CARRAGEENAN)

AMIODARONE (Cordarone) Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = D Theoretically, combining Fucus vesiculosus with amiodarone might cause excessively high iodine levels.  Details Fucus vesiculosus contains high concentrations of iodine (7135). Amiodarone contains 37.3% iodine and can increase iodine levels. Concomitant use might increase the risk of having excessive iodine levels and adversely affecting thyroid function (7135,17574). Monitor thyroid function.

ANTICOAGULANT/ANTIPLATELET DRUGS Interaction Rating = Minor Be watchful with this combination. Severity = Moderate •  Occurrence = Unlikely •  Level of Evidence = D Theoretically, taking Fucus vesiculosus with antiplatelet or anticoagulant drugs might increase the risk of bruising and bleeding.  Details In vitro evidence suggests that a constituent of Fucus vesiculosus, known as fucoidan, has anticoagulant effects (12797,74149,74183,74240). However, in clinical research, fucoidan does not seem to have significant anticoagulant activity when taken orally, possibly due to poor absorption (74183).

ANTITHYROID DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Due to its iodine content, Fucus vesiculosus might alter the effects of antithyroid drugs.  Details Fucus vesiculosus contains high concentrations of iodine (7135). Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking Fucus vesiculosus while using antithyroid drugs could alter the effects of the antithyroid drugs (2138,17574).

CYTOCHROME P450 2C8 (CYP2C8) SUBSTRATES Interaction Rating = Minor Be watchful with this combination. Severity = Mild •  Occurrence = Possible •  Level of Evidence = D Theoretically, concomitant use of Fucus vesiculosus with CYP2C8 substrates might increase the risk for adverse effects.  Details In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, inhibits CYP2C8 (97791). This interaction has not been reported in humans.

CYTOCHROME P450 2C9 (CYP2C9) SUBSTRATES Interaction Rating = Minor Be watchful with this combination. Severity = Mild •  Occurrence = Possible •  Level of Evidence = D Theoretically, concomitant use of Fucus vesiculosus with CYP2C9 substrates might increase the risk for adverse effects.  Details In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, inhibits CYP2C9 (97791). This interaction has not been reported in humans.

CYTOCHROME P450 2D6 (CYP2D6) SUBSTRATES Interaction Rating = Minor Be watchful with this combination. Severity = Mild •  Occurrence = Possible •  Level of Evidence = D Theoretically, concomitant use of Fucus vesiculosus with CYP2D6 substrates might alter the effects of these substrates.  Details In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, both inhibits and induces CYP2D6 (97791). This interaction has not been reported in humans.

CYTOCHROME P450 3A4 (CYP3A4) SUBSTRATES Interaction Rating = Minor Be watchful with this combination. Severity = Mild •  Occurrence = Possible •  Level of Evidence = D Theoretically, concomitant use of Fucus vesiculosus with CYP3A4 substrates might increase the risk for adverse effects.  Details In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, inhibits CYP3A4 (97791). This interaction has not been reported in humans.

LITHIUM Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Concomitant use of Fucus vesiculosus and lithium has resulted in hyperthyroidism.  Details There is a case of hyperthyroidism occurring in a patient taking Fucus vesiculosus and lithium (74217). Monitor thyroid hormones closely in patients taking lithium and Fucus vesiculosus concomitantly.

THYROID HORMONE Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Due to its iodine content, Fucus vesiculosus might alter the effects of thyroid hormone.  Details Fucus vesiculosus contains high concentrations of iodine (7135). Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking Fucus vesiculosus while using thyroid hormone could alter the effects of thyroid hormone.

(Read more about FUCUS VESICULOSUS)

General ...Orally, Ascophyllum nodosum seems to be generally well-tolerated.

Endocrine ...Orally, taking Ascophyllum nodosum powder 500 mg daily for 14 days has been reported to cause elevated levels of thyroid stimulating hormone (TSH) in 2 of 22 women in a clinical trial. The powder contained 356 mcg iodine per 500 mg. Levels of free thyroxine (T4) were unaffected (94997).

Gastrointestinal ...Orally, Ascophyllum nodosum has been reported to cause stomach discomfort in one clinical trial (94996).

(Read more about ASCOPHYLLUM NODOSUM)

General ...Orally, black pepper seems to be well tolerated when used in the amounts found in food or when taken as a medicine as a single dose. Topically and as aromatherapy, black pepper oil seems to be well tolerated.
Most Common Adverse Effects:
Orally: Burning aftertaste, dyspepsia, and reduced taste perception.
Inhalation: Cough.
Serious Adverse Effects (Rare):
Orally: Allergic reaction in sensitive individuals.

Gastrointestinal ...Orally, black pepper can cause a burning aftertaste (5619) and dyspepsia (38061). Single and repeated application of piperine, the active constituent in black pepper, to the tongue and oral cavity can decrease taste perception (29267). By intragastric route, black pepper 1.5 grams has been reported to cause gastrointestinal microbleeds (29164). It is not clear if such an effect would occur with oral administration.

Immunologic ...In one case report, a 17-month-old male developed hives, red eyes, facial swelling, and a severe cough following consumption of a sauce containing multiple ingredients. Allergen skin tests were positive to both black pepper and cayenne, which were found in the sauce (93947).

Ocular/Otic ...Topically, ground black pepper can cause redness of the eyes and swelling of the eyelids (5619).

Pulmonary/Respiratory ...When inhaled through the nose as an olfactory stimulant, black pepper oil has been reported to cause cough in one clinical trial (29162).

(Read more about BLACK PEPPER)

General ...Orally, burdock is well tolerated when consumed as a food. Although a thorough evaluation of safety outcomes is lacking, there has been long-standing historical use of burdock with few noted adverse effects.
Serious Adverse Effects (Rare):
All ROAs: Allergic reactions, including contact dermatitis and anaphylaxis.

Dermatologic ...Contact dermatitis has been reported secondary to burdock, especially after prolonged use of the root oil (37422). There are cases of allergic dermatitis secondary to using burdock plasters. Two males and a 14 year-old female developed erythematous and vesicular, pruritic, and exudative reactions in areas corresponding to the application of burdock root plasters (12667). Reactions occurred up to 7 days after initial use. Patch testing was positive for burdock sensitivity in all three patients and was nonreactive in matched controls.

Hematologic ...In one case report, a 38-year-old female developed immune-mediated thrombocytopenia after consuming a "cleansing" tea containing unknown amounts of burdock and yellow dock. The patient presented with bruising, mild weakness, and fatigue, which started 2-3 days after consuming the tea, and was found to have a platelet count of 5,000 per mcL. Symptoms resolved after platelet transfusion and treatment with oral dexamethasone (108971). It is unclear if these effects were caused by burdock, yellow dock, the combination, or other contributing factors.

Hepatic ...A case of idiosyncratic drug-induced liver disease (DILI) is reported in a 36-year-old female who presented with abdominal pain after 1 month of taking an herbal liver detox tea containing burdock and other ingredients. Remarkable laboratory values included elevated liver enzymes, alkaline phosphatase, and total bilirubin. The patient received a loading dose of N-acetylcysteine and was hospitalized for 12 days (112178). However, it is unclear if the adverse effect was due to burdock, other ingredients, or the combination.

Immunologic ...There is one case of anaphylactic shock secondary to eating boiled burdock. One hour after eating boiled burdock the patient presented with redness over the entire body and dyspnea. He was found to have low blood pressure and was treated with subcutaneous epinephrine 1 mg and intravenous lactated ringer's solution containing hydrocortisone 100 mg and dexamethasone 8 mg. The cause of anaphylactic shock was attributed to allergenicity to burdock based on positive skin prick test results. Previously, the patient had experienced urticaria after eating boiled burdock (12660).

Neurologic/CNS ...Anticholinergic reactions including dry mouth, dizziness, blurred vision, weakness, dilated pupils, inability to urinate, and bradycardia have been reported following the consumption of burdock products (12662,37421,37431,37434,37435). However, these anticholinergic reactions are believed result from contamination of burdock with belladonna alkaloids. Burdock itself does not contain atropine or other constituents that would be responsible for these reactions.

(Read more about BURDOCK)

General ...Orally, carrageenan is well tolerated in amounts found in foods. Intranasally, carrageenan seems to be well tolerated.
Most Common Adverse Effects: None known.

Dermatologic ...Topically, when carrageenan gel was applied to the penis or anus prior to anal intercourse in one clinical study, it was reported to cause discomfort or adverse reactions in 59% of males, compared with 44% of those using placebo (107851).

Genitourinary ...Intravaginally, carrageenan gel has been associated with mild vaginal itching and burning, a vaginal abrasion, bladder fullness, and urinary hesitancy. However, it is unclear if carrageenan was the causal factor of these symptoms (40044,40068).

Hematologic ...In one clinical study in males, carrageenan gel applied topically to the penis and anus prior to anal intercourse was reported to cause rectal bleeding that was not directly related to anal intercourse in 8% of patients, compared with 0% of patients using placebo (107851).

Oncologic ...Observational research has found that increased consumption of carrageenan is associated with an increase in breast cancer incidence (40046).

(Read more about CARRAGEENAN)

General ...When used orally, Fucus vesiculosus may be unsafe due to its iodine content. Topically, Fucus vesiculosus appears to be well tolerated.
Most Common Adverse Effects:
Orally: Goiter, hyperthyroidism, hypothyroidism.
Serious Adverse Effects (Rare):
Orally: Thyroid cancer.

Cardiovascular ...In one report, a young adult with obesity developed palpitations and syncope after taking an oral weight loss supplement containing a combination of Fucus vesiculosus, dandelion, and boldo for 3 weeks. The patient was found to have a prolonged QT interval on ECG and frequent episodes of sustained polymorphic ventricular tachycardia (14321). It is not clear whether Fucus vesiculosus, another ingredient, or the combination of ingredients is responsible for this adverse effect. The product was not analyzed to determine the presence of any potential toxic contaminants.

Endocrine ...Orally, Fucus vesiculosus can cause or exacerbate hyperthyroidism due to its high iodine content (12789,13061,74217). One case of hyperthyroidism has been reported for a 60-year-old patient taking lithium for bipolar disorder and a combination product containing Fucus vesiculosus 0.125 grams, cascara 0.170 grams, and Frangula 0.222 grams per tablet for laxative purposes. The patient had been taking one tablet of the combination laxative product daily for several years. Following discontinuation of the supplement, thyroid levels normalized (74217). Similar cases of hyperthyroidism have been reported for patients taking other seaweed-containing herbal supplements (Dream Shape; Ever Youth). Analyses of these supplements shows that these products contain triiodothyronine 1 mcg and thyroxine 3-4 mcg. In addition to seaweed, Dream Shape also contains hydrangea vine, maltose, chrysanthemum, Chinese matrimony vine, and sucrose, while Ever Youth contains radish, lotus leaf, chrysanthemum, hawthorn, senna tea, and Chinese matrimony vine (13061).
Orally, prolonged use of Fucus vesiculosus has been associated with hypothyroidism (13664). The iodine in Fucus vesiculosus can cause idiosyncratic reactions.
According to the Institute of Medicine Food and Nutrition Board, prolonged, high dietary intake of iodine is associated with goiter and an increased risk of thyroid cancer (7135).

Genitourinary ...A case of hemorrhagic cystitis characterized by dysuria and polyuria has been reported in a young adult who took a specific product (Slim-Kombu, Balestra and Mech) containing Fucus vesiculosus and 19 other herbal extracts orally for weight loss. Upon discontinuation, symptoms improved (46959). It is unclear if this effect was due to Fucus vesiculosus or other ingredients in the supplement.

Renal ...A case of hemorrhagic cystitis characterized by dysuria and polyuria has been reported in a young adult who took a specific product (Slim-Kombu, Balestra and Mech) containing Fucus vesiculosus and 19 other herbal extracts orally for weight loss. Upon discontinuation, symptoms improved (46959). It is unclear if this effect was due to Fucus vesiculosus or other ingredients in the supplement. Nephrotoxicity has been associated with oral intake of Fucus vesiculosus that was contaminated with arsenic (12800).

(Read more about FUCUS VESICULOSUS)