Before using this medicine you should read all the instructions on the leaflet. The doctor or health care provider guides the patient on the dose of the medicine, what is the possible side effects of the medicine, the warning of the medication, etc. if the patient forgets to take the medicine, he should take it as possible as soon or skip that dose. But never take the medicine double dose for a missed one.
Do not drink alcohol while taking Opana ER 40 mg, it may dangerous side effects for the patient.
Always consult your doctor or healthcare provider and give all the personal information and take his advice correctly.