Final answer:
Aspirin is a medication used to treat pain, fever, and inflammation. It acts as an anticoagulant, reducing adverse effects during a heart attack or stroke. Long-term use can increase the risk of gastrointestinal ulcers and bleeding.
Step-by-step explanation:
Aspirin, also known as acetylsalicylic acid, is a medication used to treat pain, fever, and inflammation. It acts as an anticoagulant by inhibiting the aggregation of platelets, making it effective in reducing the adverse effects during a heart attack or stroke. However, long-term use of aspirin can increase the risk of gastrointestinal ulcers and bleeding. It is important to consult a physician before starting any aspirin regimen.