The main ingredient of Tylenol is acetaminophen, there are acetaminophen extended-release tablets for adults and acetaminophen oral suspensions, suspension drops and solutions for children, regardless of which form, the oral absorption into the body is acetaminophen. Another name for acetaminophen is paracetamol, which is pharmacologically classified as an antipyretic, analgesic, and anti-inflammatory drug, but the anti-inflammatory effect is very weak, and is mainly used clinically to reduce fever and relieve pain. Tylenol antipyretic can not only reduce fever, sore throat, headache, muscle aches that occur when adults and children have colds; it can also be used to treat mild to moderate pain, such as headache, toothache, joint pain, muscle pain, migraine, nerve pain, menstrual pain. Tylenol fever reducer is only an allopathic medicine used to reduce symptoms and should not be applied for a long time or used in excess.