Naltrexone has been FDA-approved for alcohol use disorder since 1994. The Sinclair Method has decades of clinical research behind it. And yet, many people who ask their doctor about naltrexone for alcohol are met with blank stares, skepticism, or a prescription for daily use rather than the targeted pre-drinking protocol central to TSM.

This is not because your doctor is uninformed — it is because the Sinclair Method remains underutilized in mainstream clinical practice, and because medication-assisted treatment for alcohol use disorder is still undertaught in medical education. If you want to explore naltrexone for alcohol, you may need to come prepared.

Why Many Doctors Are Unfamiliar with the Sinclair Method

Naltrexone is most commonly prescribed as a daily medication to support abstinence. This is the protocol most clinicians learned in training. The Sinclair Method — which uses naltrexone specifically before drinking, not daily — is a different protocol, and one that many clinicians have not encountered.

Additionally, alcohol use disorder is often undertreated in primary care settings. Many physicians feel underprepared to address it, and may default to referrals to AA or rehab rather than medication-assisted options. This is a systemic gap, not a reflection of your situation.

Before the Appointment: What to Know

Going into the conversation informed will help you have a more productive discussion. Key things to understand:

Naltrexone is FDA-approved for alcohol use disorder and is not a controlled substance.
The Sinclair Method uses naltrexone before drinking, not as a daily abstinence aid.
The mechanism is pharmacological extinction — gradually reducing the brain's reward response to alcohol.
The evidence base includes multiple large randomized controlled trials, including the COMBINE study.
Contraindications include current opioid use, significant liver disease, and acute hepatitis.

What to Say

You do not need to arrive with a lecture. A simple, direct opening works well:

"I've been researching medication-assisted options for alcohol use, and I'd like to talk about naltrexone. I've read about the Sinclair Method — using naltrexone before drinking rather than daily — and I'm wondering if it might be appropriate for me."

From there, be honest about your drinking patterns, your goals, and any relevant medical history. The more information your clinician has, the better they can evaluate whether naltrexone is appropriate for you.

Questions to Ask

Am I a candidate for naltrexone given my medical history?
Are you familiar with the Sinclair Method protocol (taking naltrexone before drinking)?
Should we check my liver function before starting?
What dose would you recommend?
What side effects should I watch for, and how long do they typically last?
How will we know if it's working?
Are there any medications I'm currently taking that could interact with naltrexone?

If Your Doctor Is Unfamiliar with TSM

If your doctor is not familiar with the Sinclair Method, you can share the key reference: Dr. John David Sinclair's 2001 paper in Alcohol and Alcoholism, "Evidence about the use of naltrexone and for different ways of using it in the treatment of alcoholism." The COMBINE study (Anton et al., 2006, JAMA) is also widely recognized.

Some clinicians may be open to learning; others may not feel comfortable prescribing outside their usual protocol. If your primary care physician is not a good fit for this conversation, consider seeking out an addiction medicine specialist, a psychiatrist with addiction training, or a telemedicine provider who specializes in medication-assisted treatment for alcohol use disorder.

What If You Are Denied a Prescription?

You have options. Telemedicine platforms have made it significantly easier to access addiction medicine clinicians who are familiar with naltrexone and the Sinclair Method. A second opinion from a specialist is always reasonable when you have done your research and believe a treatment may be appropriate for you.

This site is for educational purposes only and does not provide medical advice. The information here is intended to help you have a more informed conversation with a licensed clinician — not to substitute for one.