Percocet Online Purchase - Fast and Speedy Delivery. Visit Single Kits to buy Percocet online. Percocet is a prescription painkiller that contains a combination of acetaminophen and oxycodone. It is commonly used to manage moderate to severe pain. The oxycodone component is an opioid that works by altering the brain's perception of pain, while acetaminophen helps reduce fever and relieve pain. However, it is essential to use Percocet only as prescribed and follow the recommended dosage, as it can be habit-forming and lead to dependence. In some cases, side effects such as drowsiness, nausea, and constipation may occur.