what is Tylenol composed of?
Shares & Saves. Save. Tylenol is an over-the-counter pain reliever which is useful in reducing fevers as well as treating arthritis, colds, toothaches, muscle aches, backaches and headaches. It is widely available in drug stores and supermarkets and comes in a variety of dosages.ctive Ingredient. Tylenol contains acetaminophen. This OTC medication is an analgesic (relieves pain without affecting consciousness) and an antipyretic (fever reducer) which is manufactured by McNeil Consumer Healthcare.