对乙酰氨基酚, commonly known as acetaminophen or paracetamol, is a widely used medication for relieving pain and reducing fever. It is often found in over-the-counter products and is considered safe when used as directed. This drug works by inhibiting certain chemicals in the brain that signal pain and fever. It is commonly used to treat headaches, muscle aches, arthritis, and colds. However, excessive use can lead to serious liver damage, so it is important to follow dosage guidelines carefully.