Quick answer
Oral Wegovy tablets use a four-stage escalation: 1.5mg (weeks 1 to 4), 4mg (weeks 5 to 8), 9mg (weeks 9 to 12), then 25mg as the maintenance dose from week 13 onward. This graduated schedule allows the body to adjust to semaglutide slowing gastric emptying.
20 July 2026 update: the 9mg and 25mg Wegovy tablet strengths have reached the scheduled UK availability milestone. Provider routes and prices still differ, so check the linked provider page and our current comparison before ordering.
Read the 20 July launch update or compare current provider prices.
Oral Wegovy (semaglutide tablet) reaches its full therapeutic effect through a four-stage dose escalation. Starting low and increasing gradually is not optional: it is the mechanism that allows your body to adjust to semaglutide slowing gastric emptying, which would otherwise cause severe nausea at full strength from day one.
This guide explains each dose stage, what the clinical evidence shows at each point, and what most people actually experience week by week.
The four-stage escalation at a glance
1.5 mg
Weeks 1 to 4
Starting dose. Establishing the morning routine. Minimal side effects for most people.
4 mg
Weeks 5 to 8
First escalation. Appetite suppression becomes noticeable. Nausea may increase.
9 mg
Weeks 9 to 12
Second escalation. Significant appetite suppression. Weight loss accelerating.
25 mg
Week 13 onward
Full therapeutic dose. Maximum efficacy. Long-term treatment phase.
Why does oral Wegovy need such high doses compared to the injection?
The active molecule in both the tablet and injection is identical semaglutide. What differs is how it enters your bloodstream. The subcutaneous injection delivers semaglutide directly under the skin with approximately 89% bioavailability. The tablet uses a compound called SNAC (sodium N-[8-(2-hydroxybenzoyl)amino] caprylate) to carry semaglutide through the stomach lining, a far less efficient route with approximately 1 to 2% bioavailability.
This is why a 25mg tablet and a 2.4mg injection produce broadly comparable clinical results. The dose in mg is much higher for the tablet, but the amount of semaglutide actually reaching the bloodstream is similar. It is not a more powerful version of the medicine: it is the same medicine delivered differently.
How does the tablet escalation compare to the injection?
The oral tablet reaches maintenance dose faster than the injection. The injection takes 16 weeks to reach its 2.4mg maintenance dose. The tablet reaches its 25mg maintenance dose at approximately week 13 (day 91). For people who want to reach full therapeutic effect sooner, this is a practical advantage of the tablet form.
| Feature | Oral Wegovy tablet | Wegovy injection |
|---|---|---|
| Stages to maintenance | 4 stages | 5 stages |
| Time to maintenance | Approximately 13 weeks | 16 weeks |
| Maintenance dose | 25mg daily | 2.4mg weekly |
| Bioavailability | 1 to 2% | 89% |
| Weight loss (trial data) | 16.6% full-adherence, 13.6% treatment-policy at 64 weeks | Check the cited STEP evidence on the injection page |
| Frequency | Once daily | Once weekly |
Clinical outcomes: what the evidence shows
Novo Nordisk’s OASIS 4 phase III trial followed 307 adults for 64 weeks. The full-adherence analysis showed 16.6% mean body weight reduction versus 2.7% on placebo. The treatment-policy analysis showed 13.6% versus 2.2%. Those are the two figures that belong together whenever this 25mg evidence is described.
Can you stay at a lower dose if you cannot tolerate escalation?
Yes. The prescribing guidance specifically states that if a patient cannot tolerate a higher dose, the prescriber should consider delaying dose escalation. You can remain at 1.5mg, 4mg, or 9mg longer than the standard four-week window if needed. It is not a failure to stay at a lower dose: it is preferable to stopping treatment entirely.
The 30-minute rule applies at every dose
Regardless of which dose stage you are at, the fasting and timing rules never change: take the tablet first thing in the morning on an empty stomach, use a maximum of 120ml of plain still water only, and wait at least 30 minutes before eating, drinking anything else, or taking other oral medications. Read the complete how-to-take guide for more detail.
Switching from the injection to the tablet
Any switch between formulations must be planned and managed by your prescriber based on your individual treatment history. The tablet and injection do not use a simple do-it-yourself dose conversion, so this is not a change to make on your own.
Compare prices across the dose stages
UK providers price the Wegovy tablet per month of supply, which means the cost varies by dose stage. Use the dose-by-dose price comparison table to see current prices at each stage from all UK providers.
Frequently asked questions
What are the four doses of the Wegovy pill?
The Wegovy pill comes in four strengths used in sequence: 1.5mg for weeks 1 to 4, 4mg for weeks 5 to 8, 9mg for weeks 9 to 12, and 25mg from week 13 onward as the maintenance dose.
How long does it take to reach the Wegovy pill maintenance dose?
The Wegovy pill reaches its 25mg maintenance dose at approximately week 13.
Can I stay at a lower dose if I have bad nausea?
Yes. Prescribers can delay escalation if a higher dose is not well tolerated. Speak to your prescriber before changing anything.
Why is the pill dose so much higher than the injection?
The tablet is absorbed far less efficiently than the injection, so the mg number is higher even though the active ingredient is the same semaglutide.
Can I switch from the Wegovy injection to the pill mid-treatment?
Any switch between formulations should be handled by your prescriber. The tablet and injection do not use a simple home dose conversion.