Can you mix percocet and acetaminophen?

....really? Percocet is a mixture of two different active ingredients. Oxycodone and Tylenol. Tylenol is also known as acetaminophen. So there is already acetaminophen in percocet. There is no reason to take MORE Tylenol. However, if you really feel the need it won't hurt to take a Tylenol or two with your prescription. You need to be careful though, too much Tylenol is known to cause liver damage. Keep it reasonable and you will be fine.