Many medications have an effect on bleeding. It is important that you review all medications and supplements before any procedure is performed. This includes all medications (prescription and those purchased “over the counter”) as well as any herbal supplements (pills, teas, etc.) or vitamins. This document contains a list of some of the common aspirin containing medications or those known to affect bleeding. Many medications for colds, flu, headaches, and other ailments contain some amount of aspirin or anti-inflammatory. It is important to read the labels for acetylsalicylic acid, which is the name for Aspirin. New medications are available daily, so be sure to ask your doctor or pharmacist about medications and supplements not found on this list.