Aspirin

Aspirin, also known as acetylsalicylic acid, is a medication used to treat pain, fever, or inflammation. For pain or fever, effects typically begin within 30 minutes. Aspirin is a nonsteroidal anti-inflammatory drug (NSAID) and works similar to other NSAIDs but also suppresses the normal functioning of platelets.

Side Effects
More commonly reported ones are:

More commonly reported ones in children are:

Less commonly reported ones are: