Opana ER is an opioid pain medication that affects your brain andmay cause the following side effects:
Dizziness or drowsiness
Tiredness
Pain in the stomach
Constipation
Experiencing these mild side effects symptomsare apparent, but you should consult your doctor if these mild side effects are unbearable or making your life too complicated.
You should also stop taking Opana ERand seek emergency medical assistance ASAP if you experience the following health issues while taking medicine:
Weak or shallow breathing
Sleep apnea (breathing that stops while sleeping)
Seizures or convulsions
Pain in the chest
Cough with green or yellow mucus
Vomiting
Low cortisol levels in the body resulting in nausea or vomiting,loss of appetite, dizziness, tiredness, or weakness
Symptoms of serotonin syndrome such as hallucinations, unusual sweating, agitation, shivering, fast heart rate,stiff muscles, twitching, loss of coordination, nausea or vomiting, or diarrhea
Any other severe allergic reaction to the medicine
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