As a physician who has cared for patients struggling with alcohol use, I’ve seen the pain, embarrassment, and stall-and-relapse cycle that many experience. Traditional abstinence-based programs (which can be very helpful) aren’t always a perfect fit for everyone. That’s why I want to talk about the Sinclair Method: what it is, how it works (in plain language), where the evidence stands, who it may suit (and not suit), and how to approach it safely.
What is the Sinclair Method?
TSM is a harm reduction medication-assisted approach to alcohol use disorder (AUD) that uses a medicine called Naltrexone before drinking. By taking Naltrexone before alcohol use, you disrupt the “pleasure/reward” link that alcohol tends to generate. Over time, the brain starts to unlearn the idea that alcohol = reward.
Why does it work?
This method differs from many standard programs in that it does not demand immediate abstinence from day one. Instead, you are expected to continue drinking while on the Naltrexone, so that the “reward” of drinking is repeatedly blocked and thus weakened.
How it works physiologically
- When you drink alcohol, your brain releases positive chemicals called endorphins which bind to opioid receptors and reinforce the behaviour (“that felt good → let’s do it again”).
- Naltrexone is an opioid blocker (antagonist) which blocks those receptors so the endorphins can’t produce the usual “buzz” or reward when you drink. You take naltrexone about 1 hour before your first drink, and to continue to do so each time you drink.
- Because the reward is blocked, over weeks to months the brain’s learned association between drinking and pleasure weakens (called “pharmacological extinction”). With repeated use, the craving and compulsion to drink tend to diminish.
What is the evidence?
- The Sinclair Method is reported to have success rates around ~ 75-80% in some sources (for those who adhere to the protocol) of achieving meaningful reductions in drinking and/or regaining control.
- Supporting evidence: naltrexone has been shown in multiple double-blind placebo-controlled trials to reduce heavy drinking when used correctly.
- Observational and clinical reviews describe TSM as offering “moderation” or “controlled drinking” rather than automatic abstinence, and highlight that this may fit certain patient goals better.
- That said: it’s not perfect. There are limitations: the need for consistent adherence (taking the medication before drinking each time), it may not be appropriate for everyone (especially those with very severe dependence or multiple complicating factors) and the broader acceptance in some treatment communities is still limited.
Good candidate features
- Someone who recognizes that drinking is problematic (frequent heavy episodes, losing control, health consequences) and is motivated to change.
- Someone who wants an alternative to the “abstinence only” approach (for example: has tried abstinence before, but relapsed; or would prefer to aim for controlled drinking).
- Someone with stable medical/psychiatric status, who is able to adhere to taking medication before drinking, willing to monitor their drinking and progress.
- Someone who is okay with a slower, gradual process (not expecting overnight abstinence).
Less suitable candidates / caution
- Someone with severe alcohol dependence such as daily heavy drinking, physical withdrawal symptoms, major liver disease, and previous history of inpatient detox might need more intensive care than TSM alone.
- Someone who cannot reliably adhere to taking the medicine before drinking on a consistent basis (e.g., unpredictable drinking occasions, chaotic lifestyle).
- Someone with major contraindications to naltrexone (for example, liver failure, or other medications that strongly interact with Naltrexone) — must be medically evaluated.
- Someone who drinks but is not ready to change or lacks motivation; any treatment works best when there is internal motivation.
- Someone who expects that the medication alone will “cure” the problem without self-effort, monitoring or behavioural change.
Final Thoughts
In summary: the Sinclair Method offers a medication-assisted alternative to all-or-nothing abstinence-only models. For the right patient—motivated, medically stable, willing to adhere to the protocol—it can be a powerful tool for regaining control over drinking, reducing cravings, and reshaping the relationship with alcohol.
The method is not suitable for everyone and some people still may require total abstinence, inpatient detoxification, or more intensive behavioural programs. Using this method does still involve drinking — for patients whose goal or health context really requires complete stopping right away (e.g., severe liver disease) this may not be ideal.
From a physician’s point of view: if I had a patient who was struggling with alcohol, open to change, not doing well with prior abstinence-only attempts, and medically appropriate — I would absolutely consider TSM as a viable option, explain it thoroughly, set realistic expectations, and monitor closely. The Sinclair Method must be part of a comprehensive care plan — not “just take a pill and you’re done.”
If you are reading this and thinking “this might be an option for me or someone I care about,” reach out to us at Thalia Medical Center and discuss whether this method is appropriate for you.