Acetylsalicylic acid, commonly known as Aspirin, is a medication used to relieve pain, reduce inflammation, and lower fever. It belongs to a class of drugs called nonsteroidal anti-inflammatory drugs (NSAIDs). Aspirin works by inhibiting certain enzymes in the body that contribute to pain and inflammation, making it effective for conditions like headaches, muscle aches, and arthritis. In addition to its pain-relieving properties, Aspirin is often used in low doses to reduce the risk of heart attacks and strokes. It helps prevent blood clots by making platelets less sticky, which is beneficial for individuals with cardiovascular issues.