You can also buy Oxycodone online. However, it can cause physical dependence and addiction. The immediate-release formulation of oxycodone is FDA approved for the management of acute or chronic moderate to severe pain, for which the use of opioid medication is deemed appropriate and for which other pain management strategies are insufficient. Follow all directions that are started on your prescription label. You can buy Oxycodone online to be relieved of pain.You are very likely to have withdrawal symptoms as soon as you stop using Oxycodone after using it for a long period of time.