Buy OxyContin OP 80mg is a prescription pain medication. It is used to relieve pain, but there are some serious side effects associated with the medication. One of these is adrenal insufficiency, which can cause symptoms such as nausea, vomiting, anorexia, weakness, and dizziness. The medication can also affect fertility and the ability to conceive children. It is recommended that you consult a healthcare professional before using this medication.