What are the ingredients in a tylenol-4?

Tylenol 4 is a prescription medication that contains two active ingredients: codeine and acetaminophen. Codeine is an opioid pain reliever that belongs to the same class of medications as morphine and heroin. Acetaminophen is a non-steroidal anti-inflammatory drug (NSAID) that reduces pain and fever. Tylenol 4 is used to treat moderate to severe pain, such as headaches, migraines, toothaches, and menstrual cramps. It is also used to relieve pain after surgery or childbirth.