Acamprosate vs Naltrexone

These two medications are both approved by the FDA for the treatment of alcohol use disorder. Which is right for you?


What is the difference between acamprosate and naltrexone?

While both naltrexone and Campral can be used to treat alcohol addiction they both differ slightly in purpose: naltrexone can be used by people still drinking with the goal of reducing the frequency and duration of drinking. However, Campral is taken with the purpose of maintaining abstinence (no drinking at all).

Naltrexone (ReVia and Vivitrol) FAQs

Naltrexone (brand names ReVia and Vivitrol) is an FDA-approved medication that helps to treat alcohol use disorder by reducing cravings and blocking the euphoric effects of alcohol. Naltrexone belongs is a group of medications called opioid antagonists, and can also be used to treat opioid use disorder.

Naltrexone works by blocking the pleasurable effects of drinking alcohol. Because of this effect, naltrexone has been shown to assist alcohol addiction recovery by reducing the amount and frequency of drinking episodes.

Naltrexone comes in pill form (brands ReVia, Depade) and is available in an extended release injection (brand name Vivitrol), which Workit providers can prescribe for members in California.

No, you can take naltrexone while still drinking to help reduce your heavy drinking days.

Some of the reported side effects of taking naltrexone include sleep problems, dizziness, joint pain or muscle cramps, nausea and/or vomiting, and loss of appetite. It can also cause cold-like symptoms, like a stuffy nose, sore throat, and sneezing. As with most side effects, they vary per person and can dissipate after a period of time taking the medication.

Antabuse is a medication that causes you to get sick when you consume alcohol. Antabuse acts as a physical deterrent, but doesn’t assist in the management of cravings. Naltrexone works to reduce the cravings and pleasure from drinking that may cause you to drink in the first place. You will not feel sick if you drink while taking naltrexone.

The purpose of naltrexone is to reduce the frequency and duration of drinking days

  • Individuals can still drink if they choose
  • Naltrexone can be taken in a targeted manner: one hour before drinking to help maintain control over amount the person drinks, or as cravings arise, to help resist drinking
  • It cannot be used with pain medications containing opioids, as it blocks their effects
  • It should not be taken if the individual has liver problems, experiences depression, is pregnant, or is breastfeeding
  • Some find that it may reduce other pleasurable effects from activities like exercise
  • If a person returns to use (relapses) and takes opioids, they are at increased risk of an opioid overdose

Acamprosate (Campral) FAQs

Acamprosate (brand name Campral) is an FDA-approved medication for the treatment of alcohol use disorder. It helps to reduce cravings for alcohol and minimizes withdrawal effects when you’ve quit drinking.

Acamprosate (Campral) works by correcting the brain chemistry changes caused by acute alcohol use disorder (including heavy drinking, binge drinking, alcohol dependence, and alcoholism). Over time, addiction affects the brain chemicals responsible for providing a sense of calm. That’s why when you quit drinking you may feel uncomfortable and anxious. Campral works to decrease these unpleasant feelings and maintain abstinence from alcohol.

Campral is often prescribed alongside behavioral therapy—like cognitive behavioral therapy—which has been found to be most effective in the treatment of alcohol addiction.

Yes, Campral is prescribed to people who have already stopped drinking alcohol. It simply doesn’t work in a person who is continuing to drink alcohol. The goal of this medication is to sustain abstinence recovery and make the process easier.

As with any medication, some people wil experience side effects. These may subside over time. Some of the side effects associated with Campral include: diarrhea, headache, dizziness, difficulty sleeping, dry mouth.

Antabuse is a medication that causes you to get sick when you consume alcohol. Antabuse acts as a physical deterrent, but doesn’t assist in the management of cravings. Campral works to reduce the discomfort that may cause you to drink in the first place.

The purpose of acamprosate is to maintain abstinence recovery. That means not drinking at all.

  • It can reduce cravings
  • It can be taken if a person relapses
  • The person taking it must maintain abstinence
  • It doesn’t treat withdrawal symptoms, which may be challenging for those with alcohol dependence
  • It should not be taken if you have kidney problems
  • It must be taken at least twice per day, which can be difficult for some people to keep track of

Medication-assisted treatment available in many states

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Do I have a drinking problem?

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Alcohol Self-Assessment Quiz