Many medications can interact with alcohol, leading to increased risk of illness, injury, or death. For example, it is estimated that alcohol-medication interactions may be a factor in at least 25 percent of all emergency room admissions. Acetaminophen is the generic name for Tylenol, a pain reliever and fever reducer. It's one of the most widely used pain medications in the world. Melatonin information based on scientific evidence includes description, drug interactions, safety concerns, and effectiveness. Warfarin (Coumadin® / Jantoven®) 1. What is warfarin (Coumadin® / Jantoven®)? Warfarin is an anticoagulant. Sometimes warfarin is referred to as a “blood thinner,” however; Acetaminophen is a drug used to relieve pain and reduce fever. Most people don't experience side effects with this drug when it is used appropriately. Common side effects are nausea, rash, and headache. Adverse and serious side effects are kidney damage, anemia, anyphylaxis, and liver failure. Many mothers need to take medications during breastfeeding. Although many drugs are safe to use when you're breastfeeding, most will get into your milk to some degree and may even affect your milk supply. Fall 2008. Dangerous Food-Drug Interactions By Carol M. Bareuther, RD Aging Well Vol. 1 No. 4. Consider these surprising facts: Older adults comprise 13% of the population but account for 34% of all prescriptions and 30% of all over-the-counter drugs used in the United States. Diclofenac sodium can potentially interfere with many other drugs, including ACE inhibitors and diuretics. This eMedTV Web page explains how diclofenac sodium drug interactions can sometimes change the way your body metabolizes the drugs. History. The effect of grapefruit juice with regard to drug absorption was originally discovered in 1989. The first published clinical report on grapefruit drug interactions was in 1991 in The Lancet entitled Interactions of Citrus Juices with Felodipine and Nifedipine. Warfarin side effects: Watch for interactions. Although commonly used to treat blood clots, warfarin (Coumadin, Jantoven) can have dangerous side effects or interactions that can place you at risk of bleeding.