Naltrexone 50mg: What Is It and How Is It Used?

Naltrexone is a medication that is used to treat various conditions, including alcohol and opioid dependence. In this article, we will delve into the mechanism of action of Naltrexone, dosage recommendations, potential side effects, what to avoid when taking it, over-the-counter availability, and where to buy Naltrexone for alcoholism.

Naltrexone Used For

Naltrexone is a medication with a multifaceted range of applications. Its primary uses include:

  1. Alcohol Dependence: Naltrexone is often prescribed to individuals with alcohol use disorder (AUD) to reduce alcohol cravings and decrease the pleasure associated with alcohol consumption. This can be a crucial component of alcohol addiction treatment programs.
  2. Opioid Dependence: Naltrexone is used to help individuals who are recovering from opioid addiction. It works by blocking the effects of opioids, making it less likely that the person will experience a high if they use opioids.

Naltrexone Mechanism of Action

Naltrexone functions as an opioid receptor antagonist. Its primary mechanism of action involves binding to and blocking the body's opioid receptors. By doing so, it inhibits the pleasurable effects of opioids and reduces the desire to use them. This helps in preventing relapse among individuals in recovery from opioid addiction.

Naltrexone Dosage

The appropriate dosage of Naltrexone can vary depending on the condition being treated and individual patient factors. It is crucial to follow your healthcare provider's recommendations regarding the right dosage for your specific needs. Typically, Naltrexone is available in both oral and extended-release injectable forms. The injectable form is administered once a month, while the oral form may be taken daily.

Naltrexone 50mg

Naltrexone is available in various dosages, including 50mg, depending on the specific medical condition being treated. The 50mg dosage is typically used in cases of opioid addiction and, less frequently, in the treatment of alcohol use disorder (AUD). The appropriate dosage and form (oral or extended-release injectable) are determined by a healthcare provider based on the individual's needs and response to treatment.

Naltrexone Side Effects

Like any medication, Naltrexone can cause side effects. Common side effects may include nausea, headache, dizziness, and fatigue. In rare cases, more severe side effects may occur, so it is essential to discuss any concerns with your healthcare provider. If you experience severe side effects, seek medical attention immediately.

What to Avoid When Taking Naltrexone?

When taking Naltrexone, it is essential to avoid any substance or activity that involves opioids. This includes prescription pain medications, street drugs, or any opioid-containing substances. Combining Naltrexone with opioids can lead to a reduced or blocked effect of the opioids and, in some cases, may lead to opioid withdrawal symptoms.

Naltrexone Over the Counter

Naltrexone is generally not available over the counter (OTC) without a prescription. Due to its specific indications and potential side effects, it is typically prescribed and monitored by a healthcare provider. Do not attempt to obtain Naltrexone without a prescription, as it may not be safe or effective for your particular situation.

Alternative to Naltrexone

Revia is an alternative medication to Naltrexone, and it contains the same active ingredient, Naltrexone. It is available in various dosages, including 50mg, and is used for similar purposes in the treatment of alcohol use disorder and opioid dependence.

The choice between Naltrexone and Revia often comes down to factors such as healthcare provider preference, availability, and specific patient needs. Both medications are effective in treating alcohol and opioid addiction when used as part of a comprehensive treatment program that may include counseling and support.

Where to Buy Naltrexone for Alcoholism

If you are seeking Naltrexone for the treatment of alcohol dependence, it is essential to consult with a healthcare provider or addiction specialist. They can provide a prescription and guidance on where to obtain the medication. Treatment plans for alcohol use disorder often involve a combination of medication, counseling, and support to maximize effectiveness.


In conclusion, Naltrexone is a valuable medication for the treatment of alcohol and opioid dependence. Its mechanism of action, dosage, and potential side effects make it an essential tool in addiction treatment. However, always seek professional medical advice and adhere to your healthcare provider's recommendations for the safest and most effective use of Naltrexone.