Tylenol is a brand name for the medication acetaminophen, which is commonly used to relieve pain and reduce fever. It is available in various forms, including tablets, capsules, and liquid. Tylenol is often recommended for headaches, muscle aches, arthritis, and other mild to moderate pain. Acetaminophen works by blocking the production of certain chemicals in the brain that signal pain and fever. It is generally considered safe when taken as directed, but excessive use can lead to serious liver damage. Always follow the dosage instructions on the label or consult a healthcare professional if unsure.