Opana ER is a medication prescribed by doctors to relieve chronic pain in patients with conditions such as arthritis, chronic low back pain, and cancer pain. It is not intended for general pain relief and can be taken alone or in combination with other medications.Prior to prescribing Opana ER Medicine 40mg Online, it is essential to assess the patient's susceptibility to addiction, abuse, and misuse. It is advised to regularly monitor for such behaviors and conditions.