The short answer is: usually yes — but it depends on three things you need to check before you commit to leaving.
Most people searching this question have already been on Mounjaro or Wegovy for several months. They've done the hard work of titrating up, managing the early side effects, and actually losing weight. The idea of going back to a 2.5mg Mounjaro starter dose — or 0.25mg Wegovy — and waiting another four months to get back to where they were is genuinely demoralising. It's also, in most cases, unnecessary.
Why people switch
The most common reasons people look to move provider are price, stock reliability, support quality, and first-order discounts. None of these are trivial. Switching is a legitimate and common decision — your prescriber does it all the time with other medications.
Since Eli Lilly's September 2025 wholesale price increase, the price gap between providers at higher Mounjaro doses has widened to £60–100 per month. That's real money over the course of a year, and it's worth understanding how to switch without losing your progress in order to take advantage of it.
Will they restart you?
This is the thing that matters most and the thing providers are least transparent about.
Every provider has a transfer policy — a set of rules that determines whether they'll prescribe you at your current dose, step you down one level, or require you to restart entirely. Most don't publish it clearly. The ones that do often bury it in FAQ pages or hide it behind a consultation form.
Here's what we've confirmed across the main UK providers as of March 2026. "Gap" means the time since your last injection:
| Provider | Max gap (same dose) | Notes |
|---|---|---|
| Voy | 4 weeks | Most flexible. Individually assessed by clinician. |
| EverydayMeds | 3 weeks | Evidence required. Express 24hr approval available. |
| MedExpress | 3 weeks | Streamlined questionnaire process. |
| Asda, Boots, Simple, Superdrug, Lloyds, Bolt | 2 weeks | Standard across most UK online providers. |
| UK Meds | 1 week | No formal transfer policy. Restart likely after any gap. |
If your last injection was within the past two weeks, almost every provider above will consider continuing you at your current dose — subject to seeing evidence.
What evidence do you need?
This trips people up more than the gap policy does. You need documentation that shows three things: your name, the medication and dose, and the date of your most recent prescription or order.
What counts as acceptable evidence varies, but in practice most providers will accept:
- A photo of your pen label (most reliable)
- A screenshot of your most recent order confirmation
- A dated prescription letter, if your current provider issues them
What usually doesn't work: a bank statement, an email receipt without dose details, or verbal confirmation that "you've been on it for six months."
Before you cancel: Take a clear photo of your pen label. It takes five seconds and eliminates the most common transfer complication. The pen label is the sticker on the actual injector pen — not the box.
What the evidence looks like
Both documents contain the same three pieces of information providers need to verify your transfer. Here's what to look for on each — and the parts that actually matter are marked.
The pen label is more reliable than the order confirmation because it proves you received and used the medication — not just that you ordered it. If your current provider sends a box label rather than a pen label, most providers will accept that too, but photograph the pen if possible.
The step-down rule
Even if a provider accepts your transfer, they may step you down one dose rather than continuing at your current level. This is common when your gap is between 2–4 weeks, or when you're moving between drug types.
A one-dose step-down is not nothing. At the Mounjaro doses where the price increase bites hardest (10mg+), stepping back to 7.5mg means another four weeks before you're back where you were. Factor that into your cost calculation when comparing providers — the cheapest option on paper may not be cheapest if it includes a restart tax.
Switching between Mounjaro and Wegovy
This is more complex than switching between providers on the same drug, and worth treating separately. Mounjaro and Wegovy use different active ingredients (tirzepatide vs semaglutide) and different dose scales. The standard guidance from prescribers is:
- Leave a one-week gap between your last dose of one and your first dose of the other
- Expect to step down one level from your current dose — your prescriber will determine the equivalent
- Start the new drug's titration schedule from that lower point
If you're on Mounjaro 10mg and switch to Wegovy, you would not start at 2.4mg. Your prescriber will assess the right Wegovy starting point — in most cases 1mg or 1.7mg depending on your history. Every provider we've checked does this routinely; it's not unusual or complicated.
Is it actually worth it?
Before you move, do the maths properly. The thing to compare isn't the headline "from" price — it's the price at your specific dose.
A few things to account for: first-order discounts vs repeat pricing (if you're planning to stay long-term, the repeat price matters more than the first-month deal); delivery costs, which range from free to £4.50 depending on provider; and loyalty schemes, where EverydayMeds gives £25 off every repeat order and Voy's longer-plan discounts can save £20/month on a 6-month Mounjaro plan.
The cleardose* comparison tool calculates all of this at your specific dose so you can see the real number — not the starter price used in most comparisons.
There's also something nobody mentions: switching providers doesn't just affect price. It affects who is clinically responsible for your ongoing treatment. For most routine transfers this is fine. But if you've had any complications, dose adjustments for non-standard reasons, or are on other medications that interact with GLP-1s — make sure the new provider has the full picture. Don't assume the questionnaire will ask the right questions.
Checklist before you switch
Before you do anything else
- Note your current dose and the exact date of your last injection
- Photograph your pen label (the sticker on the injector, not the box) in good light
- Check your gap against the new provider's transfer policy (see table above)
- Compare the repeat price at your dose, not the starter price
- Factor in delivery costs and any first-order promos
- Complete the new provider's consultation and wait for approval
- Only then cancel your existing subscription
Common questions
No. Complete the new provider's questionnaire and get approved first, then cancel your existing subscription. Don't cancel your current provider before the new one has been approved — you don't want to be between providers if something goes wrong with the application.
Most providers say they'll notify your GP, but this is done as a courtesy, not a requirement. Your GP does not need to approve or refer you for private GLP-1 treatment. In practice, GP notification is inconsistent across providers — don't rely on it happening automatically.
Most providers don't issue prescription letters routinely, and most receiving providers don't require them. A pen label photo or order confirmation screenshot is sufficient for all providers in our table. If a new provider insists on a prescription letter, that's a red flag — contact their support team to clarify what's actually needed.
You can switch at any point in the titration schedule — there's no clinical reason to wait. In fact, switching earlier can be better if you're currently on a lower (cheaper) dose, as the price difference between providers tends to widen at higher doses. The main thing is to switch while your gap is within the new provider's transfer window.
A few. If you're at a complex point in treatment — unusual side effects, a recent dose adjustment for non-standard reasons, or on other medications your current prescriber is actively managing — continuity of care has real value. Also, if you're getting meaningful coaching or clinical support from your current provider and the new one offers less of that, the cost saving may not be worth the loss. Price isn't the only variable.