Tylenol PM

Tylenol PM is the trademark for a mixture of paracetamol (acetaminophen) and diphenhydramine, distributed by Johnson & Johnson. It is marketed as a combined analgesic and sedative, or more simply, pain reliever and sleep aid, intended to treat occasional headaches and minor aches and pains with accompanying sleeplessness. It is listed as non-habit forming.

Acetaminophen alone is sold as simply Tylenol, while diphenhydramine alone is marketed as Simply Sleep, and as Benadryl.

Diphenhydramine is an anti-histamine and is also the active ingredient in Benadryl(allergies) and Benylin which is used in cough and cold therapy as an anti-cough (anti-tussive) with the drying effect of the anti-histamine. The drowsiness is caused by the anti-histamine.

Cheese
Tylenol PM, along with black tar heroin, is a main ingredient in Cheese, a relatively new drug that has become widespread among young teenagers in the Dallas, Texas area. Recently, some stores in the Dallas area have pulled Tylenol PM from their shelves. This is because store managers believed that the people producing the 'Cheese' were shoplifting the Tylenol PM.