Tylenol is a well-known brand name for a pain relief medication that contains the active ingredient acetaminophen. This medication can be found under various other brand names or generic names. Some of the common synonyms that can be used for Tylenol include paracetamol, Panadol, Acephen, Actamin, FeverAll, Mapap, and Tempra. These medications also contain the same active ingredient and work by reducing pain and fever. It is important to note that even though these medications are commonly used for pain and fever relief, they should be taken only as directed by a healthcare professional to avoid any adverse effects.