We do only only find acetaminophen in Tylenol variations where it can be combined with other substances, such as codeine. Acetaminophen is a widely used active ingredient found in a number of other drugs, too.
The Top 3 of them can be listed as follows: Darvocet, Percocet and Vicodin.
In Darvocet, acetaminophen is combined with propoxyphene. In Percocet, with oxycodone. In Vicodin, with hydrocodone. In each case, acetaminophen is combined with an opioid analgetic, a mild narcotic pain reliever, increasing its effects and in this way relieving pain better without making the dose of an opioid higher.