Ketamine Therapy and Alcohol: What You Need to Know Before Starting Treatment

One of the most common questions people ask before starting ketamine therapy is about alcohol. Can you drink while on ketamine? Do you need to quit completely? What happens if you mix them?

These are important questions, and the answers are more nuanced than a simple yes or no. Here's what you need to know.

The Short Answer

You should not drink alcohol on the same day you take your ketamine dose. Beyond that, moderate alcohol consumption on non-dosing days is generally acceptable for most patients, though your clinician may have specific guidance based on your situation.

Why Mixing Them on the Same Day Is a Bad Idea

Both ketamine and alcohol are central nervous system depressants. Combining them can amplify sedation, impair coordination, and in more serious cases, affect breathing. At the low doses used in at-home therapy, the risk isn't as dramatic as it might sound, but it's a completely avoidable risk — so just don't do it.

The standard recommendation: no alcohol for at least 6 hours before your dose, and wait until the next day after dosing. This is easy to manage since most people take their ketamine in the evening and can simply skip alcohol that night.

Alcohol and Depression: The Bigger Picture

Here's something worth considering beyond the pharmacological interaction: if you're pursuing ketamine therapy for depression or anxiety, alcohol is likely working against your treatment goals. Alcohol is itself a depressant. It disrupts sleep architecture, increases anxiety (especially the day after drinking), and can interfere with the neuroplasticity that ketamine promotes.

This doesn't mean you need to become completely sober to benefit from ketamine therapy. But it's worth being honest with yourself about whether your drinking patterns are supporting or undermining your mental health treatment.

Many patients report that as ketamine therapy begins working, their desire to drink naturally decreases. When the underlying depression or anxiety that was driving the drinking starts to resolve, the need for alcohol as a coping mechanism often fades on its own.

Ketamine for Alcohol Use Disorder?

Interestingly, there's a growing body of research examining ketamine specifically as a treatment for alcohol use disorder. Several clinical trials (including a notable 2022 study from the University of Exeter) have shown that ketamine therapy, combined with psychological support, can significantly reduce heavy drinking days and improve abstinence rates.

This is still an emerging area of research, and ketamine isn't FDA-approved for alcohol use disorder. But it's another example of how ketamine's neuroplasticity effects may have broader therapeutic applications than initially understood.

What to Tell Your Clinician

When you do your intake evaluation, be completely honest about your alcohol consumption. This isn't a judgment situation — it's safety and treatment planning. Your clinician needs to know in order to:

• Determine if ketamine therapy is appropriate for you
• Adjust dosing if needed
• Monitor for any interactions with your overall health picture
• Provide relevant guidance for your specific situation

Under-reporting alcohol use is one of the most common mistakes people make in any medical intake, and it can lead to suboptimal treatment outcomes.

The Bottom Line

Ketamine therapy and occasional, moderate alcohol use can coexist — just not on the same day. But if you're serious about getting the most out of your treatment, taking a hard look at your relationship with alcohol is worthwhile. Many patients find that ketamine therapy naturally reduces their interest in drinking, which ends up being an unexpected bonus of treatment. Ready to take the next step? Get started with Kalm today. Explore the Kalm program. For an independent overview of providers, see the Ketamine Providers Guide.