Codeine is a sleep-inducing and analgesic drug derived from morphine. It is used to treat mild to severe pain, as a cough medicine, and for diarrhea. It is typically found in headache tablets such as Syndol, Acurate, Adco-dol, Lenapain, Lenadol, Betapyn, Pynstop, etc. Codeine belongs to a group of medicines...