In our pharmacy, you may buy Oxycodone with a credit card, PayPal, Bitcoin, or card using any online payment option within a few hours of delivery. An effective opioid painkiller that helps with moderate to severe pain control is oxycodone. One common medication used to treat chronic pain is oxycodone. Opioid medications are only available with a prescription, yet they are also freely accessible. To prevent the transmission of opioids, oxycodone binds to opioid receptors in the brain.