Buy Opana ER online is a prescription medication used to treat severe pain. When used as directed by a doctor and taken by the patient for whom it was prescribed, it can be safe and effective. However, like any medication, it can also be dangerous if it is not used as directed or taken by someone for whom it was not prescribed. Opana ER is an opioid medication, which means it can be habit-forming and has a high risk of abuse, addiction, and overdose. Opana ER should not be taken by people who have a history of drug or alcohol abuse, have breathing problems, or are taking certain medications that can interact with it. It can also cause side effects such as constipation, nausea, vomiting, dizziness, and drowsiness. Overall, Opana ER can be safe when used as directed by a healthcare professional and taken by the patient for whom it was prescribed. However, it is important to understand the risks and potential side effects associated with this medication and to use it only as directed. Opana ER is often used just as one analgesic to relieve mild to reasonably extreme agony. It has become the in most cases approved opiate in the USA. Probably aided by this, misuse of Opana ER has been on the rise, these days. In 2006 that it was essentially the most usually abused opioid pharmaceutical published as substance evidence.