Buy OxyContin Online is a brand name for a prescription medication that contains the active ingredient oxycodone. It is an extended-release formulation of oxycodone, which means it releases the medication gradually over an extended period of time, providing longer-lasting pain relief. Oxycodone, the active ingredient in OxyContin, is a potent opioid analgesic used for the management of moderate to severe pain. It works by binding to opioid receptors in the brain and spinal cord, reducing the perception of pain.