Aspirin and acetaminophen are two common over-the-counter pain relievers, but they work in different ways and have different uses.

Aspirin, also known as acetylsalicylic acid, is a non-steroidal anti-inflammatory drug (NSAID) that works by blocking the production of prostaglandins, which are substances that cause pain, inflammation, and fever. Aspirin is commonly used to relieve mild to moderate pain, reduce fever, and reduce inflammation. It is also used as a blood thinner to prevent blood clots in people at risk of heart attack or stroke.

Acetaminophen, also known as paracetamol, is a pain reliever and fever reducer that works by blocking the production of prostaglandins in the brain, but it does not have anti-inflammatory properties like aspirin. Acetaminophen is commonly used to relieve mild to moderate pain and reduce fever. It is also sometimes used in combination with other medications to treat colds, flu, and other conditions.

Both aspirin and acetaminophen can be effective in relieving pain and reducing fever, but they have different side effects and interactions. Aspirin can irritate the stomach lining and increase the risk of bleeding, especially when taken in high doses or for long periods of time. Acetaminophen can be toxic to the liver if taken in large amounts or if taken with alcohol.

It is important to always read and follow the instructions on the label and to talk to a healthcare professional before taking any medication, especially if you have a medical condition or are taking other medications.