This combination product contains two medications: aspirin and omeprazole. It is used to reduce the risk of stroke or heart attack in people who have had "mini-strokes" (transient ischemic attacks), or a stroke due to a blood clot, or who have heart disease. This product is used by people who are at risk for developing ulcers while taking aspirin.

Aspirin belongs to a class of drugs known as antiplatelets. It has many uses, such as for pain relief or to reduce a fever. In low doses (such as this product), it is used to prevent harmful blood clots that can cause a stroke or heart attack. It works by stopping platelets in your blood from clumping together to form clots. Omeprazole belongs to a class of drugs known as proton pump inhibitors (PPIs). It works by decreasing the amount of acid your stomach makes. This effect helps prevent ulcers and other stomach-related problems (such as heartburn) that can be caused by aspirin.

This medication contains a delayed-release form of aspirin. It should not be used to treat conditions that require an immediate-release form of aspirin, such as right after a heart attack or before certain heart procedures (such as percutaneous coronary intervention-PCI). Also, this combination product is not the same as taking aspirin and omeprazole separately.