UK Best Weight Loss Meds UK Live GLP-1 price tracking
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Latest UK price comparison

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Buying guide

How to find the best weight loss meds in the UK

The most effective weight loss medicines available in the UK are GLP-1 receptor agonists — Mounjaro (tirzepatide) and Wegovy (semaglutide). They are prescription-only and priced per dose, and the same pen can cost very different amounts depending on which registered online pharmacy you buy it from. This page brings every published price into one sortable table so you can see, at a glance, who is cheapest for the exact dose you need.

Prices climb as you titrate up to a maintenance dose, so the cheapest pharmacy at 2.5 mg is not always the cheapest at 15 mg. Use the 12-month cost column to compare the realistic total once you factor in a typical titration schedule — it is usually a better guide than the headline starting price.

Compare by medication

Mounjaro vs Wegovy: which is right for you?

Mounjaro (tirzepatide) acts on two gut hormones (GIP and GLP-1) and in head-to-head trials has produced the greatest average weight loss of the licensed options. Wegovy (semaglutide) targets GLP-1 alone and has the longest real-world track record. The Wegovy pill is a daily oral form of semaglutide for people who would rather not inject. All three require an online consultation with a prescriber, who will confirm whether treatment is appropriate for you.

How to buy safely

Only buy from pharmacies registered with the General Pharmaceutical Council (GPhC). Every provider in our table shows its GPhC number and Trustpilot rating so you can check it before you commit. Be wary of any seller offering these medicines without a consultation, or at a price far below the range you see here.

Frequently asked questions

What is the cheapest weight loss injection in the UK?

It changes as pharmacies update pricing, which is why we re-check every 72 hours. Open the medication tab you want above and sort by price or 12-month cost — the cheapest provider for each dose is highlighted in green in the live table.

How often are the prices updated?

Every 72 hours. We read each pharmacy’s public price page automatically, time-stamp it, and show the “Updated” time and a live “Next refresh” countdown above the table. A green “Live” badge marks the providers on that automatic schedule.

Is Mounjaro or Wegovy more effective for weight loss?

In clinical trials Mounjaro (tirzepatide) produced the largest average weight loss, while Wegovy (semaglutide) has a longer track record. The right choice depends on your health and your prescriber’s assessment — this site compares price, not medical suitability.

Do I need a prescription to buy Mounjaro or Wegovy?

Yes. Both are prescription-only medicines in the UK. Every listed pharmacy provides them through an online consultation with a registered prescriber; none can be bought over the counter.

Are these prices the full cost?

We show the price for each dose exactly as the pharmacy publishes it. Some prices include the consultation and delivery and some don’t, so always confirm the final total on the pharmacy’s own website before you buy.

Methodology

How we track prices

1

We read the pharmacies directly

We automatically check the public price pages of major UK online pharmacies — Boots, Asda, Superdrug, Simple Online Pharmacy, Bolt, Voy, Numan, Medexpress and Chemist4U, with more added over time.

2

Refreshed every 72 hours

Prices are re-checked and time-stamped every 72 hours. The “Updated” time and live “Next refresh” countdown above the table show exactly when the data was last pulled and when it refreshes next.

3

Shown exactly as published

We display the price for each dose as listed by the pharmacy and highlight the cheapest in every dose column. Where a pharmacy doesn’t publish a per-dose price, we leave it blank (—) rather than estimate.

4

Community prices are reviewed

Spotted a better deal? Submissions from readers are checked by a moderator before they appear in the live table, with a fresh timestamp.

Prices and offers can change at any time — always confirm the current price on the pharmacy’s own website before purchasing. This page is for information only and is not medical advice. GLP-1 medicines are prescription-only and require a consultation.

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Seen a better deal?

Send us the price, dose, pharmacy and evidence link. We review it, then add it to the live table with a fresh timestamp.

Choose the medicine you found the deal for.

Example: 2.5 mg or 5 mg.

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