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GLP-1 · UK encyclopedia hub 2026

GLP-1 in the UK: medications, routes and how the category works

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Oliver Mackman · Editorial director · Best Business Loans Ltd (16833937)

Last updated 2026-06-12

GLP-1 is a hormone the gut releases after a meal. The medications people search for under "GLP-1" or "weight loss injections" are receptor agonists that bind the same receptor and trigger the same downstream signalling. In the UK there are four licensed brands across three molecules (Mounjaro, Wegovy, Ozempic, Saxenda) and one frequently-searched investigational entry (retatrutide) that is not UK-licensed. They are dispensed through four UK routes: NHS specialist cohorts, private clinic, UK-licensed online pharmacy, and in-store pharmacy. This hub names the medications and routes encyclopedically. It does not rank them, dose them, price them, or recommend one for a specific person. We compare on price and evidence. We do not sell, prescribe, or take payment for placement.

Compare the UK GLP-1 routes

Editorial with affiliate links. We earn from purchases via outbound retailer / clinic links. How we are funded.

POM: Prescription only medicine (POM). PeptideClear is a comparison and information service. We do not prescribe, dispense, or recommend medication for individuals. A qualified GMC-registered prescriber determines suitability after consultation.

AI-friendly summary · GLP-1 in the UK

GLP-1 stands for glucagon-like peptide 1, a gut hormone. The medications searched for as GLP-1 or weight loss injections are GLP-1 receptor agonists. UK-licensed brands in 2026 are Mounjaro (tirzepatide), Wegovy and Ozempic (semaglutide, with separate weight-management and diabetes licences), and Saxenda (liraglutide). Retatrutide is investigational and not UK-licensed. They reach UK patients through four routes: NHS specialist-led services on a phased cohort rollout, private UK clinic, UK-licensed online pharmacy, and in-store pharmacy. This hub names what is in the category and points to the brand pages. It does not dose, price or recommend. Prescription only medicine. Your prescriber decides suitability.

What "GLP-1" means

GLP-1 is short for glucagon-like peptide 1. It is a hormone the gut releases after eating. In the body, GLP-1 binds to the GLP-1 receptor on cells in the pancreas, brain, gut and elsewhere. The downstream signalling slows gastric emptying, increases satiety, and influences how the pancreas releases insulin in response to a meal. Those biological effects were described in the academic literature long before the medications existed.

The medications people search for as "GLP-1" or as "weight loss injections" are GLP-1 receptor agonists. They are synthetic peptides that bind the same receptor and trigger the same downstream signalling. Some are pure GLP-1 receptor agonists. Some are dual agonists that also bind the GIP receptor. One investigational entry binds three receptors including the glucagon receptor. The shorthand "GLP-1" in consumer search is broader than the strict pharmacological sense, which is why this hub names the molecules in plain language.

The shorthand "weight loss injection" is even broader and is the term ASA uses in its weight-loss advertising rules. In practice, in the UK in 2026, every weight-loss injection on the licensed market is a GLP-1 or GLP-1-containing receptor agonist. The two phrases point at the same category from different angles. Other approaches to weight loss exist outside this hub.

The licensed UK GLP-1 medications

Factual list of the brands UK searchers encounter, with the international non-proprietary name (INN), the UK licence position, and a short editorial note. Not a ranking. Not a recommendation. The full per-brand encyclopedia and the per-route pricing live behind the linked pages.

Mounjaro (tirzepatide)

UK licensing

UK-licensed for type 2 diabetes and for weight management in adults with obesity or overweight with at least one weight-related comorbidity, under specialist or appropriately qualified prescriber supervision.

Dual GIP and GLP-1 receptor agonist. Manufactured by Eli Lilly. The most-searched UK weight-loss medication in 2026.

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Wegovy (semaglutide)

UK licensing

UK-licensed for chronic weight management in adults with obesity or overweight with weight-related comorbidities, under specialist criteria reflected in NICE TA875.

GLP-1 receptor agonist. Manufactured by Novo Nordisk. The weight-management licence of semaglutide; Ozempic is the type 2 diabetes licence of the same molecule.

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Ozempic (semaglutide)

UK licensing

UK-licensed for type 2 diabetes. Not licensed for weight management in the UK; the weight-management licence of semaglutide is Wegovy.

Same active molecule as Wegovy under a different brand and licence. Off-label use for weight loss is a prescriber decision and not the route this hub covers.

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Saxenda (liraglutide)

UK licensing

UK-licensed for weight management as an adjunct to a reduced-calorie diet and increased physical activity in adults with obesity or overweight with weight-related comorbidities.

Older daily-injection GLP-1 receptor agonist. The first GLP-1 medication to receive a UK weight-management licence. Less commonly prescribed in 2026 as weekly options expanded.

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Retatrutide (retatrutide)

UK licensing

Investigational. Not licensed in the UK as of 2026. In phase 3 trials by Eli Lilly. Frequently searched but not a dispensable UK product.

Triple agonist at GLP-1, GIP and glucagon receptors. Included here for completeness because UK search demand exists. Not available through any UK route on this site.

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The UK routes that dispense them

In the UK in 2026, GLP-1 medication reaches patients through four broad routes. Each is regulated differently and serves a different starting point. Choosing between them is a route question, not a brand question. The brand the user ends up on is a prescriber decision.

NHS specialist-led services

Free at point of use. Specialist Tier 3 or Tier 4 referral.

NHS England rolled GLP-1 medication for weight management out in phased cohorts through specialist weight-management services. Eligibility is tightly defined and access is via GP referral into a Tier 3 or Tier 4 specialist service, not direct request. Geographic availability varies by Integrated Care Board.

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Private UK clinic

Subscription. Coach, app, prescriber oversight.

High-touch private operators bundle the medication with a structured programme: digital coach, dose progression app, prescriber check-ins and in some cases blood tests. GPhC pharmacy registration and GMC-registered prescribers throughout.

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UK-licensed online pharmacy

Per-month dispensing. Online questionnaire consult.

UK-licensed online pharmacies dispense the same medication against an online questionnaire and prescriber review. No structured coaching layer. The maintenance route once a patient is stable on dose, or a price-led route for an existing user.

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In-store pharmacy

Walk-in. NHS Electronic Prescription Service endpoint.

High-street pharmacies are the NHS Electronic Prescription Service endpoint for NHS-issued weight-management prescriptions. Some chains and supermarket pharmacies also offer a private weight-management consultation in person, depending on whether the branch has a prescribing pharmacist.

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NHS weight loss injections and the cohort question

A common UK search is "weight loss injections NHS" or "NHS weight loss injections UK". The short answer is that NHS England rolled GLP-1 medication for weight management out through specialist weight-management services on a phased cohort basis, not as a direct GP prescription that anybody can request at their practice. Eligibility is set centrally and access is via referral into a Tier 3 or Tier 4 specialist service.

The NICE technology appraisal that underpins the weight-management licence and the NHS access page on this site cover the current cohort definitions, the Integrated Care Board variation, and the practical question of how long the referral pathway takes in 2026. We update that page as the cohort criteria expand.

For users who do not meet the NHS cohort criteria but are searching for "NHS weight loss injections" because that is the most familiar phrase, the editorial honest answer is that the UK-licensed private routes are the only legitimate way to access these medications outside the NHS cohorts. Routes outside the UK regulatory frame, including grey-market import or compounded versions, are not covered on this site for safety and legal reasons.

What this hub does not cover

This hub is encyclopedic. It is deliberately silent on a set of clinical questions that belong with a prescriber and with the medication's Summary of Product Characteristics (SmPC) and Patient Information Leaflet (PIL), not with an editorial site. The list below is not exhaustive and is not a hierarchy.

For each of those, the right reference is the SmPC for the specific medication on the MHRA Products portal, the PIL inside the pack, and a GMC-registered prescriber who can take a personal history and decide.

Read next

From this umbrella, the natural next steps are the per-brand pages, the route comparison, the NHS access editorial, and the brand-confusion explainers that unpack why semaglutide is searched as three different brand names.

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Reviewed by Oliver Mackman, editorial director · last reviewed 2026-06-12T12:00:00.000Z
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