Opana ER 40 mg is an opioid medication used to treat moderate to severe pain or chronic severe pain. Oxymorphone is the drug that is present in Opana. Opana ER has other doses like Opana ER 5 mg, Opana ER 7.5 mg, Opana ER 10 mg, Opana ER 15 mg, Opana ER 20 mg, and Opana ER 30 mg.This medicine is used for patients going through cancer pain or after-surgery pain.
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