Oxymorphone (Injection Route)

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Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur:

• Blurred vision
• Chest pain or discomfort
• Confusion
• Constricted, pinpoint, or small pupils (black part of eye)
• Difficult or painful urination
• Difficult or troubled breathing
• Difficulty sleeping
• Disorientation
• Double vision
• Drowsiness or sleepiness
• Fast, pounding, or irregular heartbeat or pulse
• Frequent urge to urinate
• Hallucinations
• Irregular, fast or slow, or shallow breathing
• Noisy breathing
• Pale or blue lips, fingernails, or skin
• Slow or irregular heartbeat
• Seeing double
• Seeing, hearing, or feeling things that are not there
• Shortness of breath
• Tightness in chest
• Trouble breathing
• Unconsciousness
• Unusual tiredness or weakness
• Very slow breathing
• Wheezing

Get emergency help immediately if any of the following symptoms of overdose occur:

• Bigger, dilated, or enlarged pupils (black part of eye)
• Cold, clammy skin
• Increased sensitivity of eyes to light
• Low blood pressure or pulse
• No muscle tone or movement
• Unconsciousness
• Very slow heartbeat

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Abdominal or stomach cramps or pain
• Bloating
• Chills
• Cold sweats
• Constipation
• Cough
• Decrease in frequency of urination
• Decrease in urine volume
• Diarrhea
• Difficulty in passing urine (dribbling)
• Dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
• Dry mouth
• Flushing
• Headache
• Lethargy
• Lightheadedness
• Loss of appetite
• Mood or other mental changes
• Nausea
• Restlessness
• Sleepiness or unusual drowsiness
• Skin rash, hives, itching, or redness
• Sweating
• Swelling or puffiness of face
• Unusual tiredness
• Vomiting
• Weight loss

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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