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What to expect in your first 14 days on the Sinclair Method

A guide to the first two weeks on naltrexone: settling into the routine, getting through any side effects, and what changes (and what does not yet).

SR
Dr Seth Rankin
19 April 2026 5 min read

The first two weeks of the Sinclair Method are about settling into the routine of the tablet, getting through any side effects, and beginning the slow work of extinction. Here is what most people find.

Day 1

Your medicine and your plan arrive. Many people start at a quarter of a 50mg tablet. Take it with food, an hour before you plan to drink. If you are not drinking that day, you take nothing; you start when your next drink comes up. Some feel slightly queasy an hour after the first dose, most feel nothing, and there is no immediate change to how alcohol feels yet.

Days 2 to 7: settling in

Stay at the quarter-tablet dose for the first several days, taken before each drink. Most people describe these days as normal but slightly tired, or a bit foggy first thing. Mild nausea is the commonest side effect and usually settles within the week. You may notice drinks feel a touch less intense, but the effect at this dose is small. The early days are about easing onto the medicine, not extinction yet.

Days 8 to 14: building up

Move to half a tablet, same routine, an hour before drinking. Most of the first week's side effects have settled. Some people notice the effect on drinking more clearly now: a slightly weaker pull toward a second, a little less satisfaction from a strong drink. Towards the end of the fortnight you typically move up again, approaching the full dose, and the medicine starts doing real work.

What changes in the first 14 days

  • You build the habit of taking the tablet on time, the single most important thing

  • Side effects, if any, settle

  • A subtle drop in the pleasure of drinking starts to register

  • Small reductions in the number of drinks per session may begin, often without you noticing

What does not change yet

  • Cravings are not substantially quieter

  • Total weekly intake has not usually fallen by much

  • You do not feel transformed

  • The urge to drink is still there

This matters, because many people expect a bigger effect in the first two weeks. The method is a gradual fade, not a cure. The bigger changes come at weeks four to six and beyond.

Things that help

  • Set a phone alarm an hour before your usual first drink

  • Keep tablets in two places, home and bag or wallet, so an unexpected drink never catches you without one

  • Drink a large glass of water before your first alcoholic drink

  • Note your drinks, how many and when, useful for your check-ins and for your own awareness

  • Message us if anything feels off

Common worries

I drank and forgot the tablet. Do not beat yourself up. One missed session does not undo your progress. Get back on track at your next planned drink.

I get mild nausea each time. Take it with food, build up more slowly if needed, and tell us. It usually settles within one to two weeks.

I do not feel any different. That is normal at this stage. The major changes come at weeks four to six and beyond. The first two weeks are the foundation.

SR
Clinically reviewed
Dr Seth Rankin
MBChB MRCGP, Founder, LoveMyLife
Reviewed by the LoveMyLife clinical team

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