Yes, you can drink alcohol while taking naltrexone, and it will not make you sick the way Antabuse does. But it will feel different.
Naltrexone blocks most of the pleasure and buzz you normally get from drinking, so alcohol tends to feel flat or pointless. You can still get drunk, still get impaired, and still get hurt. The medication changes the reward, not the intoxication.
That difference is the whole point of how naltrexone works, and it is worth understanding before you decide anything.
What Actually Happens If You Drink on Naltrexone
Nothing dramatic, which surprises people. No flushing, no vomiting, no violent reaction.
Naltrexone is an opioid blocker. When you drink, alcohol normally triggers a release of endorphins that land on opioid receptors and produce the warm, rewarding part of a buzz. Naltrexone sits on those receptors and blocks them, so SAMHSA notes it blunts the effects and feelings of alcohol and reduces how much people drink.
What you will and will not feel
- Muted reward. The pleasant buzz is largely gone. Most people describe drinking as dull or not worth it
- Still impaired. Your coordination, judgment, and reaction time are affected exactly as they would be otherwise
- Still intoxicated. You can still get drunk, and you can still get alcohol poisoning
- No sickness. Unlike Antabuse, naltrexone does not punish you with nausea
The short version: it does not stop you from getting drunk. It stops drinking from being fun.
Naltrexone Is Not Antabuse
People mix these up constantly, and the difference matters.
| Naltrexone | Antabuse (disulfiram) | |
| How it works | Blocks the reward of drinking | Makes you physically ill if you drink |
| If you drink | Feels flat, no sickness | Nausea, vomiting, flushing |
| The mechanism | Removes the payoff | Adds a punishment |
Both are real tools, and which one fits which person is a clinical decision. But if you are picturing the medication that makes you sick, that is not this one.
Why the Blunted Buzz Actually Helps
This is where naltrexone does something clever.
When drinking stops delivering a reward, your brain slowly stops chasing it. Over weeks, the craving loop that kept pulling you toward the next drink starts to weaken, because the payoff it was expecting never arrives. Research shows naltrexone reduces the number of heavy drinking days and helps people cut back or stop.
So a slip on naltrexone tends to be shorter and smaller than a slip without it, because the thing the person was chasing is not there to chase. The medication takes the power out of the drink.
So Is It Safe to Drink on It?
Not exactly, and this is where honesty matters more than reassurance.
The real risks
- Drinking more than you planned. Because the buzz is muted, some people keep drinking trying to feel something and end up drinking more, not less
- Liver strain. Both alcohol and naltrexone are processed by the liver, so combining them adds load, which matters if your liver is already stressed from drinking
- Missing the point. Drinking on naltrexone works against the recovery the medication is meant to support
The goal is not “drink safely on naltrexone.” The goal is to use the muted reward as a bridge toward not drinking at all, with support in place while your brain recalibrates.
The One Thing You Must Never Mix
This part is not optional. Naltrexone blocks opioid receptors completely.
If you take opioids while on naltrexone, they will not work, and trying to overpower the block with a larger dose can cause a life-threatening overdose. You must also be fully opioid-free, usually 7 to 14 days, before starting naltrexone, or it can trigger sudden, severe withdrawal.
Tell any provider treating you that you are on it, especially before any surgery or pain treatment.
What This Says About Where You Are
Here is the honest read: if you are asking whether you can drink while on a medication designed to help you stop drinking, part of you is negotiating.
That is not a judgment. It is one of the most human things there is, and it is worth paying attention to rather than pushing away. Naltrexone works best alongside counseling, because the medication handles the chemistry of craving while therapy handles the reasons the drinking started. One without the other leaves half the job undone.
If that negotiation sounds familiar, it is worth talking through with someone who does this every day.
Call CMAR at (833) 448-0127. The conversation is confidential, and it commits you to nothing.
How Naltrexone Fits Treatment at CMAR in Denver
At CMAR, naltrexone is one part of a plan, not the whole plan. It comes as a daily pill or the monthly Vivitrol injection, and the choice depends on you.
- A medical assessment before anything is prescribed, including liver health and an opioid-free window
- Medically supervised detox first if you need help getting alcohol-free before starting
- The medication paired with therapy and groups, because that is what makes it hold
- Any depression or anxiety underneath treated at the same time
As a CARF-accredited provider of alcohol rehab in Denver, CMAR is in-network with most major commercial plans and accepts Colorado Medicaid. You can verify your coverage before deciding anything.
Frequently Asked Questions
No. Naltrexone does not cause nausea or vomiting when you drink. That is Antabuse, a different medication. Naltrexone instead blocks the rewarding, pleasurable effects of alcohol, so drinking tends to feel flat rather than making you physically ill.
No. You can still become intoxicated and impaired, and you can still get alcohol poisoning. Naltrexone blocks the pleasurable buzz and reduces cravings, but it does not reduce alcohol’s effect on coordination, judgment, or reaction time. It changes the reward, not the intoxication.
Yes, the same way as the pill form, since Vivitrol is extended-release naltrexone. Drinking will feel muted rather than rewarding, but you can still get drunk. The injection maintains the effect for about a month, so the blunted-reward experience lasts the whole time.
It is generally not a dangerous chemical reaction like Antabuse, but there are real risks: drinking more than intended because the buzz is muted, and added strain on the liver, which processes both. It also works against the recovery the medication is meant to support.
A slip on naltrexone tends to be shorter and smaller than one without it, because the reward the person is chasing does not arrive. Most people describe it as pointless rather than pleasurable. That blunted response is the medication doing its job, and it is a reason to keep going, not to stop.
