Below is general information about the effectiveness of the known ingredients contained in the product Kolester. Some ingredients may not be listed. This information does NOT represent a recommendation for or a test of this specific product as a whole.
INSUFFICIENT RELIABLE EVIDENCE to RATE
There is insufficient reliable information available about the effectiveness of calamus.
INSUFFICIENT RELIABLE EVIDENCE to RATE
INSUFFICIENT RELIABLE EVIDENCE to RATE
Below is general information about the safety of the known ingredients contained in the product Kolester. Some ingredients may not be listed. This information does NOT represent a recommendation for or a test of this specific product as a whole.
LIKELY SAFE ...when the seed is used orally in the amounts commonly found in food (11). Ambrette has Generally Recognized as Safe (GRAS) status in the US (4912). There is insufficient reliable information available about the safety of ambrette when used orally or topically in medicinal amounts.
PREGNANCY:
Insufficient reliable information available; avoid using.
LACTATION: POSSIBLY UNSAFE
when used orally or topically.
Ambrette passes into mother's milk (6), but the effect is unknown.
LIKELY UNSAFE ...when used orally. The FDA prohibits calamus use in food products due to evidence of carcinogenic effects in animals receiving high doses of a calamus strain high in beta-asarone (93978,94727,94728). However, the beta-asarone content can vary widely among species from 0% to 96% (6); some products may be safer than others. There is insufficient reliable information available about the safety of calamus when used topically.
PREGNANCY AND LACTATION: LIKELY UNSAFE
when used orally; avoid using (4,500).
LIKELY UNSAFE ...when used orally. Male fern can be a violent poison (2,11). For this reason, it should not be used internally (2). Canada requires that it be labeled "For external use only" (12). There is insufficient reliable information available about the safety of male fern when used topically.
PREGNANCY AND LACTATION: LIKELY UNSAFE
when used orally (12); contraindicated.
There is insufficient reliable information available about the safety of male fern used topically; avoid using.
LIKELY SAFE ...when the stalk is used in amounts commonly found in foods and when the root is used as a food flavoring. Rhubarb has Generally Recognized as Safe (GRAS) status in the US (4912).
POSSIBLY SAFE ...when the root or rhizome is used orally and appropriately in medicinal amounts for up to 2 years (92294,92295,92297). ...when the stalk is used orally and appropriately in medicinal amounts for up to 4 weeks (71351,71363,97920). ...when used topically and appropriately (10437,97919).
POSSIBLY UNSAFE ...when the leaf is used orally. Rhubarb leaf contains oxalic acid and soluble oxalate, which can cause abdominal pain, burning of the mouth and throat, diarrhea, nausea, vomiting, seizures, and death (17).
PREGNANCY AND LACTATION: POSSIBLY UNSAFE
when used in medicinal amounts, rhubarb root is a stimulant laxative; avoid using (12).
Below is general information about the interactions of the known ingredients contained in the product Kolester. Some ingredients may not be listed. This information does NOT represent a recommendation for or a test of this specific product as a whole.
Theoretically, concomitant use of ambrette with antidiabetes drugs might increase the risk of hypoglycemia.
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Theoretically, due to reports that calamus increases stomach acid, calamus might decrease the effectiveness of antacids (19).
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In vitro evidence suggests that calamus can inhibit acetylcholinesterase (AChE) (38418). Theoretically, concurrent use of anticholinergic drugs and calamus might decrease the effectiveness of the anticholinergic drug.
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Some anticholinergic drugs include atropine, benztropine (Cogentin), biperiden (Akineton), procyclidine (Kemadrin), and trihexyphenidyl (Artane).
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Animal research suggests that calamus can decrease the rate and strength of the heartbeat, which might lower blood pressure (38444). Theoretically, combining calamus with other antihypertensive medications might increase the risk of hypotension; use with caution.
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Some antihypertensive drugs include captopril (Capoten), enalapril (Vasotec), losartan (Cozaar), valsartan (Diovan), diltiazem (Cardizem), Amlodipine (Norvasc), hydrochlorothiazide (HydroDiuril), furosemide (Lasix), and many others.
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In vitro evidence suggests that calamus can inhibit acetylcholinesterase (AChE) (38418). Theoretically, concurrent use of calamus with other cholinergic drugs might have additive effects and increase the risk of cholinergic side effects.
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Cholinergic drugs include bethanechol (Urecholine), donepezil (Aricept), echothiophate (Phospholine Iodide), edrophonium (Enlon, Reversol, Tensilon), neostigmine (Prostigmin), physostigmine (Antilirium), pyridostigmine (Mestinon, Regonol), succinylcholine (Anectine, Quelicin), and tacrine (Cognex).
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Theoretically, concomitant use with drugs with sedative properties can cause additive effects and side effects (4,38400,38444).
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In vitro research suggests that calamus extract can inhibit cytochrome P450 2D6 (CYP2D6) (93975). Theoretically, use of calamus with drugs metabolized by CYP2D6 might increase drug levels and potentially increase the risk of adverse effects.
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Some drugs metabolized by CYP2D6 include amitriptyline (Elavil), codeine, desipramine (Norpramin), flecainide (Tambocor), haloperidol (Haldol), imipramine (Tofranil), metoprolol (Lopressor, Toprol XL), ondansetron (Zofran), paroxetine (Paxil), risperidone (Risperdal), tramadol (Ultram), venlafaxine (Effexor), and others.
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In vitro research suggests that calamus inhibits cytochrome P450 3A4 (CYP3A4) (93975). Theoretically, use of calamus with drugs metabolized by CYP3A4 might increase drug levels and potentially increase the risk of adverse effects.
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Some drugs metabolized by CYP3A4 include lovastatin (Mevacor), clarithromycin (Biaxin), indinavir (Crixivan), sildenafil (Viagra), triazolam (Halcion), and numerous others.
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Theoretically, due to reports that calamus increases stomach acid, calamus might decrease the effectiveness of H2-blockers (19). The H2 blockers include cimetidine (Tagamet), ranitidine (Zantac), nizatidine (Axid), and famotidine (Pepcid).
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Theoretically, calamus might potentiate the effects and adverse effects of monoamine oxidase inhibitor drugs (4).
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Theoretically, due to reports that calamus increases stomach acid, calamus might decrease the effectiveness of PPIs (19). PPIs include omeprazole (Prilosec), lansoprazole (Prevacid), rabeprazole (Aciphex), pantoprazole (Protonix), and esomeprazole (Nexium).
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Theoretically, frequent and high doses of rhubarb might increase the risk of hypokalemia when taken with corticosteroids.
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Theoretically, taking rhubarb with cyclosporine might reduce cyclosporine levels.
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Animal research shows that co-administration of rhubarb decoction 0.25 or 1 gram/kg with cyclosporine 2.5 mg/kg, decreases cyclosporine maximum plasma concentration and overall exposure levels when compared with taking cyclosporine alone. The authors theorize that rhubarb might reduce cyclosporine bioavailability by inducing of P-glycoprotein and/or cytochrome P450 3A4 (92304). However, since rhubarb was administered as a single oral dose and enzyme induction usually occurs after multiple doses, it is possible that cyclosporine absorption was actually reduced via rhubarb's stimulant laxative effects (12). Also, the composition of the rhubarb decoction was not described.
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Theoretically, overuse of rhubarb might increase the risk of adverse effects when taken with digoxin.
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Theoretically, frequent and high doses of rhubarb might increase the risk of hypokalemia.
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Theoretically, concomitant use of rhubarb with potentially hepatotoxic drugs might increase the risk of developing liver damage.
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Theoretically, long-term use of anthraquinones from rhubarb might increase the risk of nephrotoxicity when used with nephrotoxic drugs.
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The anthraquinone constituents of rhubarb have been shown to induce nephrotoxicity in animal research (71322). Additionally, in a case report, a 23-year old female presented with kidney failure after taking 6 tablets of a proprietary slimming agent (found to contain the anthraquinones emodin and aloe-emodin from rhubarb) daily for 6 weeks and then adding diclofenac 25 mg 4 times daily for 2 days. The authors postulate that the anthraquinone constituents of rhubarb contributed to the renal dysfunction, and the addition of diclofenac, a nephrotoxic drug, led to renal failure (15257). Until more is known, advise patients to avoid taking rhubarb if they are taking other potentially nephrotoxic drugs.
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Theoretically, rhubarb might increase the risk for fluid and electrolyte loss when taken with other stimulant laxatives.
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Theoretically, excessive use of rhubarb might increase the risk of bleeding when taken with warfarin.
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Below is general information about the adverse effects of the known ingredients contained in the product Kolester. Some ingredients may not be listed. This information does NOT represent a recommendation for or a test of this specific product as a whole.
General ...Orally, nausea, vomiting, and intestinal paralysis have been reported with calamus use (33310,38458,93980). Tachycardia has also been reported (93980).
Cardiovascular ...Tachycardia has been reported as a toxic effect related to oral use of calamus oil (93980).
Gastrointestinal ...A case of gastrointestinal toxicity has been reported in a 19-year-old male who appeared to use calamus root for its euphoric effects. The man ingested a large amount of the root with water and later presented at the emergency department with continuous vomiting, paleness, and sweating. He was treated intravenously with saline and promethazine (38458). Both nausea and vomiting have been reported in patients using calamus oil orally (93980). Intestinal paralysis has also been reported with calamus use in children (33310).
General
...When used orally, male fern may be unsafe.
Most Common Adverse Effects:
Orally: Diarrhea, dyspnea, headaches, nausea, optic neuritis, tremors, and vertigo.
Serious Adverse Effects (Rare):
Orally: Symptoms of toxicity include cardiac and respiratory failure, coma, muscular weakness, seizures, and temporary or permanent blindness. Death has occurred with severe poisoning.
Cardiovascular ...Orally, male fern can cause cardiac failure (6).
Gastrointestinal ...Orally, male fern can cause nausea and diarrhea (6).
Neurologic/CNS ...Orally, male fern can cause coma, headaches, muscle weakness, seizures, tremors, and vertigo (6,11).
Ocular/Otic ...Orally, male fern can cause optic neuritis and temporary or permanent blindness (6,11).
Pulmonary/Respiratory ...Orally, male fern can cause dyspnea and respiratory failure (6).
General
...Orally, rhubarb root and stalk are well tolerated when used in food amounts and seem to be well tolerated when used in medicinal amounts.
Rhubarb leaf contains oxalic acid and can be toxic. Topically, rhubarb seems to be well tolerated.
Most Common Adverse Effects:
Orally: Cramps, diarrhea, gastrointestinal discomfort, nausea, vomiting.
Topically: Rash.
Serious Adverse Effects (Rare):
Orally: Anaphylaxis.
Cardiovascular ...Orally, chronic use or abuse of rhubarb can cause arrhythmias (12).
Dermatologic ...Orally, rhubarb taken alone or in combination with other ingredients has been reported to cause rash (71315,71342). Topically, short term application of a specific product (Pyralvex) containing rhubarb, salicylic acid, and ethanol to the gums has been reported to cause slight burning and dark discoloration of the gums in approximately 1% of patients (71369). It is unclear if this effect is due to rhubarb, other ingredients, or the combination.
Endocrine ...Orally, chronic use or abuse of rhubarb can cause electrolyte loss (especially potassium), hyperaldosteronism, albuminuria, and edema (12).
Gastrointestinal
...Orally, rhubarb can cause cramp-like or spasmodic gastrointestinal discomfort, watery diarrhea, and uterine contractions (18).
Rhubarb, alone or in combination with other ingredients, has also been reported to cause bloating, nausea, diarrhea, vomiting, and stomach upset or pain in clinical studies. Diarrhea is more common with a starting dose of at least 3 grams of extract (71315,71329,71339,71340,71341,71342,71373,92300). Chronic use or abuse of rhubarb can cause inhibition of gastric motility and pseudomelanosis coli (pigment spots in the intestinal mucosa) (12,6138).
Although some research suggests that rhubarb and other anthranoid laxatives might increase the risk of colorectal cancer due to pseudomelanosis coli (30743), more recent research suggests that this condition is harmless, typically reversed with rhubarb discontinuation, and not associated with an increased risk for colorectal adenoma or carcinoma (6138).
Hematologic ...Orally, chronic use or abuse of rhubarb can cause hematuria (12).
Hepatic ...Orally, chronic use of anthraquinone-containing products, such as rhubarb, has been associated with hepatotoxicity (15257). Use of rhubarb specifically has been linked to at least 24 reports of liver injury, although details on the dose of rhubarb and duration of use in these cases are not clear (100963). In one clinical study, rhubarb, taken in combination with other ingredients, has been reported to cause mild to moderate elevations of serum alanine aminotransferase (71315).
Immunologic ...Orally, rhubarb has rarely been reported to cause anaphylaxis (18).
Musculoskeletal ...Orally, chronic use or abuse of rhubarb can cause accelerated bone deterioration and muscular weakness (12).
Renal ...Orally, chronic use or abuse of rhubarb can cause electrolyte loss (especially potassium), albuminuria, hematuria, dehydration, and nephropathies (12). There is one case report of renal failure in a patient who took a product containing rhubarb for six weeks. The patient presented with renal failure two days after starting diclofenac, which is known to have nephrotoxic effects. It is hypothesized that the combination of diclofenac with the anthraquinone constituents of rhubarb precipitated renal dysfunction (15257).