Aggrenox (generic: aspirin/dipyridamole) is a prescription medication used to lower the risk of stroke in people who have had a "mini-stroke" (transient ischemia attack) or stroke due to a blood clot.

Aggrenox is a single capsule containing two drugs, aspirin and dypyridamole. Aggrenox belongs to a group of drugs called antiplatelet agents.  Platelets normally stick together to form blood clots when blood vessels are damaged.  These clots can sometimes block blood vessels and cause a stroke.  Aggrenox works by keeping the platelets from sticking together.

Aggrenox comes in capsule form and is usually taken by mouth twice daily, with or without food. 

Common side effects of Aggrenox include headache, indigestion, nausea, and diarrhea.