Acetaminophen is the same drug, mild analgestic as PD101 mentioned that is found in Tylenol, Equate pain killer and many other over the counter legal pain medications. This and Ibuprofen are used for the treatment of mild pain associate with head aches, muscle aches, minor arthritis...this is why they are legal because they can treat your minor pains without altering your conscienceness. This is also why they are not on Erowid because they are not psychoactives.

Dextromethorphan on the other hand most definately is though they denied it for quite some time. It is available over the counter other cough suppressants such as the opiates could fuck you up even more. Generally its found mixed with other drugs like acetaminophen or in horrible tasting syrups to deter abuse and its effects are not enjoyable for people such as me.

Still to find information on these drugs you can still search google or search posts on message boards such as bluelight.nu they are full of questions on every drug you could ever imagine trying to get high off.