Yes, ibuprofen (Advil) is considered a blood thinner. It doesn't actually "thin" your blood, but slows down your blood clotting time. For example, if you cut yourself or have an injury where you bleed, it may take longer for you to form a blood clot.

Risk of stomach bleeding and a stomach ulcer may also be increased if you are at risk, take prednisone or other corticosteroids, smoke or drink alcohol regularly, or take other medicines that also increase your risk of bleeding, such as: aspirin, heparin, warfarin (Coumadin), clopidogrel (Plavix), ticagrelor (Brilinta), dabigatran (Pradaxa), apixaban (Eliquis), or rivaroxaban (Xarelto).

Always have a drug interaction check performed any time you start or stop a medication. If you notice signs or symptoms of bleeding, such as red or black-colored or tarry stools, vomit that is bright red blood or looks like coffee grounds, severe stomach pain, anemia, severe headache, low blood pressure, shortness of breath, and weakness, contact your doctor immediately.