Tylenol is an analgesic, an opioid pain reliever, also known as aminophenol hydrocodone tablets, a compound preparation, the main ingredients of which are hydrocodone hydrochloride and acetaminophen, which is mainly used for moderate to severe pain caused by various reasons, such as post-surgical pain, arthralgia, headache, neuralgia, and cancer pain. The regular dosage is one tablet every six hours, and the dosage can be adjusted according to the degree of pain and the response after taking the drug, and it should be decreased smoothly in decrements when it is no longer needed for treatment after using it for more than a few weeks, in order to prevent the body from becoming dependent and experiencing withdrawal symptoms, and the common adverse reactions include respiratory depression, apnea, low blood pressure, dizziness, drowsiness, allergic reactions, etc., and it should be applied under the supervision of a doctor, and once you have any Physical discomfort symptoms, to consult the competent doctor.