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Opana ER is the brand name medication for the generic drug named Oxymorphone. ER is the extended-release formulation of the Opana drug. This medicine is used in the treatment of patients suffering from different kinds of pain whether it is moderate or severe. This drug is used for a particular type of treatment of pain which is known as around-the-clock treatment. You can now buy Opana ER online

Opana ER belongs to the class of medications called by the name opioid analgesics. This medication is considered a long-acting opioid analgesic. Oxymorphone along with the generic medication is also an essential ingredient of Opana ER. This drug comes in a category of Schedule Class II (CII) medications. Previously this medication was also termed Oxymorphone Hydrochloride Extended Release.

Opana ER was manufactured by Endo Pharmaceuticals of the United States of America (USA). In the year 2006, Opana ER was approved by the Food and Drug Administration (FDA) for the management of moderate to severe pain. According to the guidance of the FDA, this medication should be only used, when a long-term or continuous around-the-clock analgesic treatment is required for the patients with pain.

How to buy Opana ER Online:

You can buy Opana ER online from a well-trusted pharmacy. But before buying, make sure that the pharmacy is genuine by looking into its customer reviews, testimonials, and delivery proofs.

Comparing the Mechanism of Action and Effectiveness of Opana ER:

Mechanism of Action:

Oxymorphone is an active component available in Opana ER drugs. In the entire process of mechanism, Oxymorphone is fully responsible for all the actions or functions. It interacts mainly with the opioid of mu-receptors. In a very silent manner, these mu-binding sites are diverted or distributed in the brain of humans. Not only the brain, but these sites also pass through different internal parts of the brain mostly those, that have a high density such as the amygdala, and hypothalamus

They are also present in the spinal nucleus of the trigeminal nerve as well as on the terminal axons of primary afferents in the laminae I and II of the spinal cord. Substantial Gelatinosa is the structure of the dorsal spinal cord that is involved in the transmission of modulation of pain.

Oxymorphone has also been demonstrated to bind mu-receptors on GABA-inhibitory interneurons and inhibit them. By default, these interneurons block the descending pain inhibition route. Pain modulation can therefore proceed downstream in the absence of inhibitory signals.

Effectiveness of Oxymorphone Opana:

Individuals suffering from pain can experience relief from this complication in about 30 minutes after consuming orally. In a simplified way, it means that Opana ER starts working about 30 minutes after taken.

This extended-release medication can last for about 12 hours. Bear in mind that the efficacy of the medicine depends on several factors of the individuals such as the age of the person, medical history, allergic reaction or response to the drug, and many more.

People using Opana ER can achieve steady levels of this medication in 3 days. Remember that these 3 days should be consecutive and no dose is missed in these days. The Immediate-Release formulations of Opana can start working in 1 hour and can last for around 4-6 hours.

Uses and Doses of Opana ER


Opana ER is the extended-release formulation of Opana medicine. This medication is marketed under the brand name Opana ER. Oxymorphone is a chemical salt, active ingredient, and also a generic medicine for Opana ER drug. Opana ER is used for treating and diagnosing patients who are suffering from various kinds of pain. Whether mild moderate or severe.

The ER formulation medication is mostly used for the long-term treatment of any health complication. Same, in the case of Opana ER, this medication is used when around-the-clock, long-term treatment is needed for pain complications. This medication should not be used like a daily required pain killer.


Opana ER drug medication is available in the form of oral tablets. The long-acting formulation of Opana is Known as Opana ER (Extended-Release). This drug comes in varied dosage strengths that include:

Opana Extended-Release tablets:

The initial dosage of Opana ER for patients with mild, moderate, or severe pain and who are not opioid-tolerant is 5 mg every 12 hours per day. On the other hand, the starting dose for individuals with pain and who are opioid-tolerant is 60 mg in a single day. Your healthcare expert may increase or decrease your dose gradually to find the suitable one for you.

Note: The Opana brand name has been discontinued in the United States (US)

Working – Function of Opana ER

Opana ER belongs to the family of medications known as long-acting opioid analgesics. This medication is generally used when a patient suffering from pain needs a continuous, around-the-clock opioid treatment for an extended period of time.

The basic mode of action of this medication is to force the body to change its response to pain. Let’s clarify it in simple words, Opana ER or the active ingredient Oxymorphone is when consumed by individuals, this medication triggers the signals of the Central Nervous System (CNS) or brain. When these signals are triggered, they try to change the response that the body often faces while in occur of any kind of pain.

Potential Side Effects and Risks Of Oxymorphone Opana:

Common Side Effects of Opana ER:

  • Drowsiness
  • Dizziness
  • Headache
  • Tiredness
  • Abdomen pain
  • Nausea
  • Vomiting
  • Constipation
  • Dry mouth
  • Swelling
  • Gas
  • Sweating
  • Flushing
  • Fast heartbeat
  • Red eyes
  • Feeling confused
  • Itching in the body
  • Feeling confused
  • Diarrhea

Risks and Serious Side Effects:

  • Agitation
  • Hallucinations
  • Excessive sweating
  • Shallow breathing
  • Light-headed feeling
  • Seizure
  • Chest pain
  • Cough with yellow or green mucus
  • Severe vomiting
  • High Fever
  • Shivering
  • Muscle stiffness
  • Muscle twitching
  • Loss of coordination
  • Loss of appetite

Alternatives to Opana ER:

1. Ultram: Ultram is the branded medication for the generic drug known as Tramadol. This medication is used in the treatment of moderate to severe pain. This drug is a well-reputed drug to be used when narcotic drugs are not effective for patients suffering from pain complications. Ultram is considered a synthetic opioid. The primary function of this medicine is to act in the brain and spinal cord to reduce the pain you’re experiencing.

2. Gabapentin: Gabapentin is a generic medication that consists of several branded drugs such as Gralise, Horizant, Gabarone, and Neurontin. This drug is developed specially for the treatment of nerve pain and partial seizures.

3. Methadone: Like Gabapentin, Methadone is also a generic medication, that includes some branded medicines like Dolophine, Methadose, Methadose Sugar-free, and Diskets. This medication is generally used for patients who are addicted to narcotic drugs and heroin. Sometimes, this drug is used as a pain reliever medication.

4. Morphine: Kadian and MS Contin are the two branded medications for this active component. Morphine is a prescription-only medication and is approved by the FDA for treating moderate to severe pain.

5. Oxycodone: Oxycodone is sold under various brand names such as Roxicodone and Oxycontin. Among all the opioid analgesics this medication is also an opioid pain medication that helps in treating any kind of pain.