Percocet is a prescription pain reliever combining oxycodone, a strong opioid, with acetaminophen (Tylenol). This combination offers powerful relief for moderate to severe pain, often prescribed after surgery or for injury recovery. Percocet works by reducing pain signals while also addressing fever or general discomfort. Due to risks of liver damage from acetaminophen and dependence from oxycodone, it must be used strictly under medical supervision.