Description
What is Opana ER 7.5mg?
Opana ER 7.5mg is an extended-release formulation of oxymorphone hydrochloride, prescribed for the management of moderate to severe chronic pain that requires continuous, long-term opioid therapy. It is not meant for use on an as-needed basis or for mild pain conditions.
This formulation provides around-the-clock pain relief and is typically prescribed to opioid-tolerant patients who have already been treated with lower doses of opioid medications.
You can learn more about the pharmacology of oxymorphone at Medscape: Oxymorphone Overview.
How to Use Opana ER 7.5mg
Opana ER 7.5mg should be taken exactly as prescribed by your healthcare provider. It is usually taken every 12 hours with water on an empty stomach, at least one hour before or two hours after eating.
Important precautions:
- Swallow the tablet whole — do not crush, chew, or dissolve it.
- Doing so can lead to a rapid release of oxymorphone and cause potentially fatal overdose.
- Do not increase or decrease your dose without medical advice.
For detailed medical usage guidance, refer to the FDA: Opana ER Prescribing Information.
What is Opana ER 7.5mg Used For?
Opana ER 7.5mg is prescribed to relieve persistent pain associated with conditions such as:
- Chronic musculoskeletal pain
- Post-surgical pain
- Cancer-related pain
- Nerve pain that requires long-term opioid management
It works by binding to opioid receptors in the brain and spinal cord, altering the perception of pain and emotional response to it.
To understand more about pain management, visit Johns Hopkins Medicine: Pain Management Overview.
Side Effects of Opana ER 7.5mg
Like other opioid medications, Opana ER 7.5mg may cause side effects that can vary depending on dosage, tolerance, and overall health condition.
Common side effects include:
- Nausea or vomiting
- Constipation
- Dizziness or drowsiness
- Dry mouth
- Sweating
Serious side effects may include:
- Slow or difficult breathing
- Extreme drowsiness
- Confusion or agitation
- Fainting
- Seizures
Seek medical help immediately if you notice any signs of allergic reaction, such as swelling, rash, or breathing difficulty.
For an expanded list of side effects, visit Drugs.com: Opana ER Side Effects.
Warnings and Precautions
- Avoid alcohol while taking this medication, as it can lead to dangerous respiratory depression.
- Do not share this medication with others — it is a Schedule II controlled substance.
- Inform your doctor about other medications you are taking, especially benzodiazepines, sedatives, antidepressants, or muscle relaxants.
- Pregnant or breastfeeding women should consult their healthcare provider before use.
To understand opioid risks and safe usage, check CDC: Opioid Basics.
How Long Does Opana ER 7.5mg Stay in Your System?
The half-life of oxymorphone is around 9 to 11 hours, but traces can remain in the system for 2–4 days, depending on factors such as metabolism, dosage, and duration of use.
For detailed scientific data on how opioids metabolize, refer to National Library of Medicine: Oxymorphone Metabolism.
Product Highlights
- Brand Name: Opana ER
- Active Ingredient: Oxymorphone Hydrochloride
- Strength: 7.5mg
- Formulation: Extended-Release Oral Tablet
- Intended Use: Chronic, moderate to severe pain requiring long-term opioid therapy
- Prescription Required: Yes
- Controlled Substance: Schedule II
- Duration of Action: Up to 12 hours





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