OTC

Painkiller / Blood Thinner (NSAID — Non-Steroidal Anti-Inflammatory Drug and Antiplatelet)

Acetylsalicylic Acid

Last reviewed April 2026

Who is this for?

What is this drug?

Acetylsalicylic acid (commonly known as Aspirin) is a painkiller and blood thinner that works by reducing substances in the body that cause pain, swelling, and fever, and by preventing blood cells from clumping together to form dangerous clots.

What is it used for?

Headachebody painfeverjoint paintoothacheprevention of heart attackprevention of strokemild arthritis pain

Available Over The Counter

Available at pharmacies without a prescription. Rules may vary by country.

Quick Interaction Check

Is Acetylsalicylic safe to take with another drug?

Check with multiple drugs →