Recovery from alcohol use disorder is, at its core, a process of letting the brain heal. Chronic heavy drinking disrupts the brain’s chemistry, and that disruption can persist for months after the last drink — driving cravings and the discomfort that fuel relapse. Acamprosate, sold under the brand name Campral, is a medication designed specifically to support that healing.
This patient guide explains how acamprosate works, who tends to benefit most, how it is dosed, how it fits with therapy, and how it differs from naltrexone. As with any medication, it is educational only; whether acamprosate is right for any individual is a decision for a qualified clinician.
—
HOW ACAMPROSATE WORKS
To understand acamprosate, it helps to recall what chronic drinking does to the brain. Alcohol affects two key neurotransmitter systems: GABA (the brain’s calming, inhibitory system) and glutamate (its stimulating, excitatory system). With long-term heavy drinking, the brain adapts to alcohol’s constant presence by rebalancing these systems.
When the alcohol is removed, that adaptation is left unbalanced — the glutamate system tends to be over-active and the GABA system under-active. This imbalance contributes to the prolonged discomfort, restlessness, anxiety, and cravings that many people experience for weeks or months into sobriety (sometimes called post-acute withdrawal).
Acamprosate is thought to work by helping to restore the balance between glutamate and GABA. Rather than acting on alcohol’s reward (as naltrexone does), it helps stabilize the disrupted brain chemistry of early recovery. The goal is to ease the lingering imbalance, making it more comfortable to maintain abstinence and reducing the cravings that arise from that imbalance.
Importantly, acamprosate is used to help people who have already stopped drinking stay abstinent — it supports the maintenance of sobriety rather than the act of quitting itself.
—
BEST CANDIDATES FOR ACAMPROSATE
Acamprosate tends to be most useful for a particular profile of patient. A clinician may consider it especially appropriate for:
- People who have already completed detox and achieved abstinence, and want support maintaining it
- Those whose goal is complete abstinence (acamprosate is oriented toward maintaining sobriety, not reducing drinking)
- People experiencing the prolonged cravings, restlessness, and discomfort of early recovery
- Patients with liver concerns: because acamprosate is processed by the kidneys rather than the liver, it can sometimes be an option for people with liver impairment who may not be ideal candidates for liver-metabolized medications
- People who prefer or need a medication that does not interact with opioid medications
As with all medication-assisted treatment, suitability depends on a full individual assessment. Acamprosate is one of several FDA-approved options, and matching the right medication to the right person is part of what a clinician does.
—
DOSING & TIMELINE
While specific dosing is always determined by a prescribing clinician, a few general points help set expectations:
- Acamprosate is typically taken as tablets multiple times per day. This consistent dosing schedule is part of how it maintains its effect.
- It is generally started after a person has stopped drinking and completed withdrawal, as it is designed to support abstinence rather than manage acute detox.
- It works gradually, supporting the brain’s rebalancing over time rather than producing an immediate effect.
- Because it is taken several times daily, consistent adherence matters for it to work well.
- Treatment is often continued for an extended period to support sustained recovery, as directed by the clinician.
One practical consideration: the multiple-times-daily schedule requires commitment. For people who find this challenging, it is something to discuss openly with their clinician, who can weigh it against other options.
—
COMBINING WITH THERAPY
A theme runs through all medication-assisted treatment, and acamprosate is no exception: medication supports recovery but does not replace the therapeutic work at its heart.
Acamprosate can ease the cravings and discomfort that make early abstinence so difficult — but it does not address why a person drank in the first place. The emotional pain, stress, trauma, thought patterns, and co-occurring conditions that drive alcohol use disorder are addressed through therapy, not medication.
This is why acamprosate is most effective as one element of a comprehensive program. By making early sobriety more comfortable and stable, it creates the conditions for therapy to do its deeper work. At a residential program like Oceánica, any medication is integrated with two weekly individual therapy sessions, five weekly group sessions, relapse-prevention planning, and whole-person wellness — all coordinated by one clinical team. Medication decisions are made by qualified medical staff as part of an individualized plan.
—
ACAMPROSATE VS NALTREXONE
Acamprosate and naltrexone are both FDA-approved for alcohol use disorder, but they work differently and suit different situations. Understanding the contrast helps clarify why a clinician might choose one over the other.
| Feature | Acamprosate (Campral) | Naltrexone |
| How it works | Helps restore the brain’s glutamate-GABA balance disrupted by drinking | Blocks opioid receptors, reducing alcohol’s rewarding effects |
| Main goal | Supports maintaining abstinence after quitting | Reduces cravings and the reward of drinking; can reduce heavy drinking |
| Processed by | Kidneys (may suit some patients with liver concerns) | Liver |
| Dosing | Tablets several times daily | Daily pill or monthly injection (Vivitrol) |
| Opioid interaction | No major opioid interaction | Cannot be used with opioids; can precipitate withdrawal |
| Best suited to | People already abstinent, aiming for full sobriety | People with strong cravings; some can reduce rather than fully stop |
Neither is universally “better” — they are different tools. In some cases, clinicians may even consider them together. The right choice depends entirely on the individual’s situation, goals, and medical history, which is why this decision is always made with a qualified clinician.
—
FREQUENTLY ASKED QUESTIONS
- What does acamprosate do?
Acamprosate helps restore the brain’s chemical balance disrupted by chronic drinking, easing the cravings and discomfort of early recovery and supporting people in maintaining abstinence after they have stopped drinking.
- Is acamprosate better than naltrexone?
Neither is universally better; they work differently. Acamprosate supports maintaining abstinence by stabilizing brain chemistry, while naltrexone reduces alcohol’s rewarding effects and cravings. The right choice depends on the individual.
- When do you start taking acamprosate?
Acamprosate is generally started after a person has stopped drinking and completed withdrawal, since it is designed to support abstinence rather than manage acute detox. A clinician determines timing.
- Is acamprosate safe for people with liver problems?
Because acamprosate is processed by the kidneys rather than the liver, it can sometimes be an option for people with liver impairment. However, suitability is always determined by a clinician based on full assessment.
—
SUGGESTED INTERNAL LINKS
Naltrexone for Alcohol Use Disorder: How It Works
Medication-Assisted Treatment for Alcohol
Alcohol Rehab in Mexico
Services and Programs at Oceánica
EXTERNAL REFERENCE LINKS
– SAMHSA — Medications for Substance Use Disorders
– NIAAA — Medications for Alcohol Use Disorder
– FDA — Acamprosate Information
—
Oceánica is a CARF-accredited residential treatment center in Mazatlán, Mexico, where any medication is integrated into a complete, individualized treatment program. Medication decisions are made by qualified medical staff. Call (213) 527-3377 or visit oceanica-usa.com. This article is informational and not a substitute for medical advice.
