In March 2002, the U.S. Food and Drug Administration (FDA) issued an advisory to consumers of the potential risk of severe liver injuryfrom the use of dietary supplements containing kava (also known as kava kava or Piper methysticum). Reports from health authorities in Germany, Switzerland, France, Canada, and the United Kingdom have linked kava use to at least 25 cases of liver toxicity, including hepatitis, cirrhosis, and liver failure, prompting some of these countries to remove kava from the market.
Avoid driving and operating heavy machinery while taking kava because the herb has been reported to cause drowsiness.
- People with heart disease or high blood pressure should be cautious about using licorice.
- When taken in large amounts, licorice can affect the body’s levels of a hormone called cortisol and related steroid drugs, such as prednisone.
- Pregnant women should avoid using licorice as a supplement or consuming large amounts of licorice as food, as some research suggests it could increase the risk of preterm labor.
Major Interaction:Sedative medications (CNS depressants)
Melatonin might cause sleepiness and drowsiness. Medications that cause sleepiness are called sedatives. Taking melatonin along with sedative medications might cause too much sleepiness. Some sedative medications include clonazepam (Klonopin), lorazepam (Ativan), phenobarbital (Donnatal), zolpidem (Ambien), and others.
Birth control pills (Contraceptive drugs)
The body makes melatonin. Birth control pills seem to increase how much melatonin the body makes. Taking melatonin along with birth control pills might cause too much melatonin to be in the body. Some birth control pills include ethinyl estradiol and levonorgestrel (Triphasil), ethinyl estradiol and norethindrone (Ortho-Novum 1/35, Ortho-Novum 7/7/7), and others.
Caffeine might decrease melatonin levels in the body. Taking melatonin along with caffeine might decrease the effectiveness of melatonin supplements.
Taking fluvoxamine (Luvox) can increase the amount of melatonin that the body absorbs. Taking melatonin along with fluvoxamine (Luvox) might increase the effects and side effects of melatonin.
Medications for diabetes (Antidiabetes drugs)
Melatonin might increase blood sugar. Diabetes medications are used to lower blood sugar. By increasing blood sugar, melatonin might decrease the effectiveness of diabetes medications. Some medications used for diabetes include glimepiride (Amaryl), glyburide (DiaBeta, Glynase PresTab, Micronase), insulin, pioglitazone (Actos), rosiglitazone (Avandia), chlorpropamide (Diabinese), glipizide (Glucotrol), tolbutamide (Orinase), and others.
Medications that decrease the immune system (Immunosuppressants)
Melatonin might increase the immune system. Taking melatonin along with medications that decrease the immune system might decrease the effectiveness of medications that decrease the immune system. Some medications that decrease the immune system include azathioprine (Imuran), basiliximab (Simulect), cyclosporine (Neoral, Sandimmune), daclizumab (Zenapax), muromonab-CD3 (OKT3, Orthoclone OKT3), mycophenolate (CellCept)...
Medications that slow blood clotting (Anticoagulant / Antiplatelet drugs)
Melatonin might slow blood clotting. Taking melatonin along with medications that also slow clotting might increase the chances of bruising and bleeding.
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St. John's Wort