I have Vicodin -- it's acetomeniphine (tylenol) and hydrocodone. Hydrocodone is a form of OxyContin. OxyContin is a form of injectable opium. See the Mayo Clinic drug information site for this and follow the clues.

Whenever I've taken Vicodin or a similar thing I'm out of commission for 24 hours for the 500 mg. size or 48 with the 750s. I don't like that; my wife flushed the 750s and we keep the 500s only for the deepest emergencies.