Opana ER 10 mg is a moderate-strength, extended-release opioid analgesic that contains oxymorphone hydrochloride, a semi-synthetic opioid derived from thebaine, an opium alkaloid. It was manufactured by Endo Pharmaceuticals and approved by the FDA for the long-term treatment of chronic moderate-to-severe pain in opioid-tolerant patients who require 24-hour pain control. https://www.zillow.com/profile/jefeyi4174