Acetaminophen, also known as paracetamol, is a common over-the-counter medication used to relieve pain and reduce fever. It is often recommended for headaches, muscle aches, arthritis, and colds. Acetaminophen works by blocking the production of certain chemicals in the brain that signal pain and fever. This medication is generally considered safe when taken as directed, but excessive use can lead to serious liver damage. It is important to follow dosage instructions and be cautious when combining it with other medications, especially those containing alcohol or other pain relievers. Always consult a healthcare professional if unsure about its use.