Revia treats addiction to drugs and alcohol. It suppresses the urge to use opioids or drink alcohol, thereby, limiting your intake. Although it isn’t a permanent cure, it forms a major part of a holistic rehab program. 

Dosing Information

Discuss all options for substance abuse before consuming Naltrexone. This medicine isn’t appropriate for those currently consuming opioids because it may result in withdrawal syndrome. 

A laboratory technician will test your urine to know whether you recently consumed opiates. The test will be repeated after one week to confirm that you’ve abstained from hard drugs. It’s best to abstain for about two weeks before commencing therapy with Naltrexone.

To avoid ingesting a wrong dose, a caregiver should administer this drug. Revia should be consumed with enough water and food to avoid digestive upset. 

A therapist can administer 50 milligrams of Naltrexone for alcoholism. It could be consumed daily for 12 weeks. However, this should be combined with support groups and medical compliance. 

Opioid dependence can be tackled with 25 milligrams of Naltrexone. If the patient doesn’t experience signs of withdrawal, a therapist can add 25 milligrams to the dosage. A high dosage between 100 - 150 milligrams could be administered to patients requiring supervised administration in a clinic.  

At the end of therapy, patients must stay away from opioids as their bodies will become more sensitive to them. If they must ingest opioids in the future, they should consume less than what they consumed prior to therapy. Consuming the exact dosage or more may result in toxicity or extermination.


Patients must adhere to these warnings:

  • Avoid ingesting Revia if you’re:
    • Allergic to Revia
    • Still abusing narcotics
    • Experiencing withdrawal syndrome
    • Suffering from hepatitis or a liver disease
  • Inform your physician if you’ve experienced renal or hepatic problems
  • Revia shouldn’t be administered to pregnant women unless the advantages outweigh the drawbacks.
  • Breastfeeding women shouldn’t utilize Revia because it’s excreted in breast milk.
  • When undergoing a surgical procedure, inform the specialist of the drugs you’re consuming.
  • When there’s an emergency, patients must wear a tag that states they’re consuming Revia, including the dosage.
  • Avoid utilizing Revia if you recently consumed Methadone.
  • Don’t attempt to reverse the effects of Revia by ingesting more opioids. It may result in unconsciousness or death.
  • Use this medicine as prescribed. Consuming high doses could damage the liver.
  • Ensure you contact a consultant if you experience pain in the right side of your abdomen, have jaundice, lose appetite, your urine becomes dark, or your feces looks like clay.  
  • Revia may not harm a fetus but continuous use of opioids during pregnancy can make the baby opioid dependent. This could be dangerous for the baby. However, immediate medical attention is required after delivery. 
  • Stay away from tasks requiring alertness because Revia might affect your thought pattern or the way you react to situations.
  • Before ingesting Revia, ask a physician whether it’s safe to utilize medicines for pain, diarrhea, cold, or cough. 
  • Periodic liver tests are required while ingesting Revia to monitor adverse effects.
  • This medicine shouldn’t be administered to patients below the age of 18 years.
  • Keep this medicine away from direct sunlight. Ensure the container is properly sealed & stored in a cool, dry place.

Side Effects

Note that a consultant has recommended this medicine because it would be highly beneficial compared to the adverse effects you may experience. If you utilize the appropriate dosage, you may not experience severe adverse effects.

Common Naltrexone adverse effects are:

  • Muscle pain
  • Insomnia
  • Nervousness
  • Headache
  • Stomach upset
  • Vomiting
  • Dizziness

Some persons experience withdrawal syndrome when they start ingesting Revia. Inform a physician if you have:

  • Nasal congestion
  • Confusion
  • Hallucination
  • Diarrhea
  • Stomach cramps

Missed Dose

When you miss a dose, wait for the next one to avoid ingesting double amounts. But if there’s ample time before the next dose, consume the one you’ve missed.


Contact the hospital immediately or the poison control team in your area if someone overdoses on Revia. In an animal experiment, doses higher than 1000 milligrams per kg of Naltrexone were administered. The animals showed the following symptoms:

  • Salivation
  • Convulsion
  • Involuntary shaking
  • Confusion
  • Depression

The mortalities recorded were a result of respiratory failure. A specialist should treat Naltrexone overdose based on the symptoms presented. They should also contact the poison control team for updated treatment info. 

Drug Interactions

Certain products may affect the way Naltrexone works. Also, they may raise the risks associated with consuming this medication. These products include supplements and OTC drugs. Therefore, patients shouldn’t increase or reduce the recommended dose or discontinue Naltrexone therapy without a consultant’s consent.

These drugs will interact with Naltrexon:

  • Duloxetine
  • Bupropion
  • Fluoxetine
  • Lorazepam
  • Gabapentin
  • Cholecalciferol
  • Levothyroxine
  • Clonazepam