A prescription opioid called How to Buy Oxycodone Online, commonly referred to as OxyContin, Percocet, and Roxicodone, is used to relieve moderate to severe pain. It is a semi-synthetic opioid made from the alkaloid thebaine, which is found in opium poppies. It functions by attaching to brain receptors that regulate pain and emotions, like the majority of opioids. Opioids interact with these receptors to prevent the spread of pain impulses from one nerve cell to another.