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. Drug Information on Effient (prasugrel) includes drug pictures, side effects, drug interactions, directions for use, symptoms of overdose, and what to avoid. Ibuprofen, sold under the brand names Advil, Motrin, and Ibuprin, is a medication used to relieve pain, swelling and inflammation. Motrin and Advil can be purchased over-the-counter in 200. Pictures of Motrin (Ibuprofen), drug imprint information, side effects for the patient. - Vitamin K foods PI - Warfarin interactions PI - Anti-clotting medicines PI; RELATED TOPICS. Patient education: Atrial fibrillation (Beyond the Basics) Warfarin is an anticoagulant (blood thinner). Warfarin reduces the formation of blood clots. Warfarin is used to treat or prevent blood clots in veins or arteries, which can reduce the risk of stroke, heart attack, or other serious conditions. Ibuprofen is associated with several suspected or probable interactions that can affect the action of other drugs. Ibuprofen may increase the blood levels of lithium (Eskalith, Lithobid) by reducing the excretion of lithium by the kidneys. 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. Motrin is used to reduce fever and treat pain or inflammation caused by headache, toothaches, back pain etc. Learn about side effects, interactions and indications. Tylenol (acetaminophen) and Motrin (ibuprofen) are pain relievers and fever reducers used for treating pain and fever associated with many conditions. Motrin is also used to treat inflammatory conditions such as arthritis.