Percocet is a prescription opioid medication that combines oxycodone with acetaminophen to treat moderate to severe pain when other options are insufficient. Oxycodone reduces pain by acting on opioid receptors, while acetaminophen enhances relief and helps reduce fever. Because of risks such as drowsiness, constipation, slowed breathing, tolerance, and dependence, Percocet is classified in the United States as a Schedule II controlled substance and requires a valid prescription. Licensed online pharmacies may offer overnight delivery only after prescription verification and pharmacist review; offers bypassing these steps should be avoided for safety and legality.