Supplements are safe! Or are they?
Over-the-counter herbal and vitamin supplements are an inexpensive and seemingly safe alternative to prescription medications. After all, the label “all natural” means they’re safe, right? Not always. Supplements are not subject to the same FDA testing as prescription medications, and these seemingly innocent remedies may react with prescription medications or have their own side effects. For example, Herbs such as St. John's Wort can prevent the liver from processing some medications, and Coumadin, a prescription blood thinner, may be affected by certain supplements. It is important for patients to report supplements they are taking to their doctors. Boston.com, June 29, 2009