People taking multiple prescription drugs and herbal supplements must avoid dangerous interactions. Many factors contribute to the estimated 1.5 million preventable adverse drug events each year. In addition, miscommunication between physicians, patients, and pharmacists also contributes to this national problem. If you are someone taking prescription drugs, you should ask your doctor about possible interactions with an herbal or vitamin products before you start taking them.
The National Council on Patient Information and Education (NCPIE) has put together a list of questions for patients to ask before starting a new prescription. http://www.talkaboutrx.org/index.jsp