Brand: ReVia, Vivitrol

Drug Type: Opiate antagonists

Form: Tablet

Age limit: 18 years and above

SKU: N/A Category: Tag:

Alcohol dependence can be treated with Naltrexone 50 Tablet, which also blocks the effects of exogenously delivered opioids. The use of naltrexone hydrochloride tablets for therapeutic purposes other than as a component of an effective plan of management for addictions has not been demonstrated. Opioid dependence is a condition in which a person’s body becomes physically reliant on a substance to prevent withdrawal. In this instance, the body has started to rely on external opioids to sustain normal function rather than producing enough of its opioids.


Administer Naltrexone 50 Tablet by mouth once daily. This medicine is supposed to be taken per doctors orders. The doctor explains the dosing and administration instructions to the patient. One should not consume more than directed by the doctor. It could be detrimental to health.  


The side effects of Naltrexone 50 Tablet occur differently in people. They are mentioned below:

  1. Anxiety
  2. Headache
  3. Weakness
  4. Nausea
  5. Joint ache
  6. Insomnia
  7. Fainting

If the side effects persist, visit the physician immediately to manage it. One may see adverse side effects in the case of drug interactions. 


The dosing schedule depends on factors like the severity of disease and the patients response to the treatment. 

Adults- 50 milligrams (mg) once daily for alcoholism is the dosage.

Children- The doctor should determine the use and dosage.

To treat drug addiction:


The first dose is 25 milligrams (mg) (one-half tablet), followed by a second dose of 25 mg one hour later. The following week, the dosage is 350 mg. 

You will be instructed by your doctor to divide this weekly dosage and take naltrexone per one of the following regimens:

Every day at 50 mg (one tablet); Monday through Friday at 50 mg (one tablet); Saturday at 100 mg (two tablets); every other day at 100 mg; or every three days at 150 mg.

Children- The doctor will decide the appropriate use and dosage.


  1. This medication prevents you from experiencing the “high” that comes from narcotic (opioid) substances, such as heroin. One should not intake heroin or other narcotics to counteract what naltrexone does. You might overdose and experience severe complications.
  2. Adverse side effects of combining Naltrexone 50 Tablet with other medicines exist. Book an appointment with the doctor if these side effects occur.
  3. Your doctor must regularly assess your development. To determine whether the medication is having adverse effects, your doctor may order specific blood tests.
  4. Your liver may suffer major side effects from this medication. If, while taking this medication, you begin to have black urine, upper stomach pain, or yellowing of the eyes or skin, call your doctor immediately.  
  5. Naltrexone won’t stop you from becoming intoxicated when you drink. Do not use naltrexone if you plan to drive or engage in other activities while intoxicated.

The doctor is the authority on what to avoid when taking this medication.


Naltrexone 50 Tablet interacts with other medicines and can reduce the effectiveness of the medication taken. Doctor informs the patient about the drugs that should not be ingested with this medicine. 

Drugs that interact with the given medicine stated below:

  • Tapentadol
  • Umbralisib
  • Voriconazole
  • Zileuton
  • Tucatinib
  • Lomitapide
  • Levorphanol
  • Kava
  • Nalbuphine

Be aware of the drugs and their uses. 

The diseases that interact with this drug are Hepatic dysfunction and Renal dysfunction. 


Active Ingredient Inactive Ingredients
Naltrexone Hydrochloride Iron oxide red
Iron oxide yellow
Lactose monohydrate
Titanium dioxide
No. of Pills

10 Pills, 20 Pills, 60 Pills, 90 Pills

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