Naltrexone, known by its brand name Naltrexone, is a medication primarily used in the treatment of alcohol and opioid addiction. This drug functions by blocking the euphoric effects associated with opioids and alcohol, thereby reducing cravings and preventing relapse in individuals who have undergone detoxification.

Price of Naltrexone

Naltrexone costs between £5.41 and £7.12 per pills. It depends on the pack size and the amount of active ingredient (10 or 90 mg).

SKU: Naltrexone Category:

Naltrexone is a medication used primarily in the treatment of alcohol and opioid dependence. It belongs to the class of drugs known as opioid antagonists, which work by blocking the effects of opioids in the brain. Naltrexone is available in both oral and injectable forms, with the oral form being more commonly prescribed.

The primary goal of naltrexone therapy is to reduce cravings and prevent relapse in individuals who are recovering from alcohol or opioid dependence. It should be used as part of a comprehensive treatment plan that includes counseling and support.

It is important to note that naltrexone should only be prescribed by a qualified healthcare professional and used under their supervision.


Naltrexone is contraindicated in individuals with the following conditions:

  • Current opioid use or dependence
  • Acute opioid withdrawal symptoms
  • Hepatic impairment
  • Hypersensitivity to naltrexone or any of its components

Prior to starting naltrexone therapy, healthcare professionals should thoroughly assess patients for these contraindications. If any of these conditions are present, alternative treatment options should be considered.

Adverse Reactions

Naltrexone may cause certain adverse reactions in some individuals. Common side effects include:

  • Nausea
  • Headache
  • Dizziness
  • Fatigue
  • Sleep disturbances

In rare cases, more serious adverse reactions such as liver toxicity, allergic reactions, and depression may occur. It is important for patients to promptly report any unusual symptoms or side effects to their healthcare provider.

Naltrexone Dosing

The dosing of naltrexone will vary depending on the individual and their specific medical condition. It is important to follow the dosing instructions provided by a healthcare professional. In general, the recommended dosing guidelines for naltrexone are as follows:

Formulation Starting Dose Maintenance Dose
Oral 50 mg once daily 50 mg once daily or 100 mg every other day
Injectable 380 mg every 4 weeks 380 mg every 4 weeks

If a dose of naltrexone is missed, it should be taken as soon as possible. However, if it is close to the time for the next scheduled dose, the missed dose should be skipped. Double dosing should not be done to make up for a missed dose.

In the event of an overdose, immediate medical attention should be sought. Symptoms of naltrexone overdose may include severe nausea and vomiting, confusion, dizziness, and difficulty breathing.

Interactions Guide

Naltrexone may interact with certain medications, altering their effectiveness or increasing the risk of side effects. It is important to inform the healthcare provider about all current medications, including prescription, over-the-counter, and herbal supplements, before starting naltrexone therapy.

Some examples of drugs that may interact with naltrexone include:

  • Opioid agonists
  • Sedatives or tranquilizers
  • Antidiabetic medications
  • Nonsteroidal anti-inflammatory drugs (NSAIDs)

The healthcare provider will carefully evaluate the potential risks and benefits when considering the use of naltrexone along with other medications.

Naltrexone: Inquiry and Response

  • Question: Can naltrexone be used to treat other addictions besides alcohol and opioids?

    Response: Naltrexone has been primarily studied and approved for the treatment of alcohol and opioid dependence. Its effectiveness in treating other addictions has not been well-established.
  • Question: Is it safe to consume alcohol while taking naltrexone?

    Response: Naltrexone can reduce the pleasurable effects of alcohol, but it does not eliminate alcohol’s intoxicating effects. It is important to discuss alcohol consumption with the healthcare provider while on naltrexone therapy.
  • Question: Can naltrexone be taken during pregnancy?

    Response: The safety of naltrexone during pregnancy has not been firmly established. Pregnant individuals should consult with their healthcare provider regarding the risks and benefits of naltrexone therapy.
  • Question: How long should naltrexone therapy be continued?

    Response: The duration of naltrexone therapy will vary depending on the individual and their treatment goals. It is typically recommended to continue therapy for at least 3 to 6 months, but longer durations may be necessary for some individuals.
  • Question: Can naltrexone be taken with other medications for mental health conditions?

    Response: It is important to inform the healthcare provider about all current medications, including those used for mental health conditions, before starting naltrexone therapy. The healthcare provider will assess potential drug interactions and determine the appropriate treatment approach.


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