Buy Percocet Online at our online pharmacy store, the number one trusted online source for Buy Percocet Online. Percocet is an opioid pain medication. It is a combination of the active ingredients of oxycodone and acetaminophen. Percocet can be used to relieve mild to moderate pain. Buy Percocet Online. Percocet is one of the most potent and widely prescribed painkillers on the market. It is used for moderate to severe acute and chronic pain. It is safe for short-term use, but can have addictive properties.