Prescription weight-loss service

Weight loss treatment, with real prescriber care.

Browse our GLP-1 weight loss injections, including Mounjaro (tirzepatide). Each treatment has its own page and eligibility check, a prescriber decides what's suitable after a full assessment.

Treatments from £130.00 · prescription & aftercare included
Treatments

Our weight-loss treatments

Tap a treatment to see full details, pricing by dose, and to check your eligibility. These aren't add-to-basket products, every one goes through assessment and prescriber review.

How it works

The same four steps for every treatment

The order is never the first step, the assessment is. A prescriber reviews every request and issues treatment only if it's suitable.

1

Pick a treatment

Read its page and run the quick eligibility check.

2

Full assessment

Medical questions plus identity and weight verification.

3

Prescriber review

A UK-registered prescriber prescribes only if suitable.

4

Dispensed & supported

Pharmacist-checked, delivered, with ongoing care.

Weight loss injections explained

What are weight loss injections, and which one is right for you?

In short: weight loss injections are prescription-only medicines, usually GLP-1 based, given as a once-weekly injection. They mimic gut hormones that reduce appetite, so you feel fuller for longer and tend to eat less. In the UK they can only be supplied after a prescriber confirms they're suitable for you, which is why every PharmaRoo treatment starts with an eligibility check and a full assessment, never an add-to-basket.

Mounjaro vs Wegovy vs Ozempic vs retatrutide

The GLP-1 medicines people compare most often, and how they differ on mechanism, format and UK licensing status.

TreatmentHow it worksFormUK status
Mounjaro (tirzepatide)Dual agonist, GLP-1 + GIPWeekly injectionLicensed for weight management
Wegovy (semaglutide)Single agonist, GLP-1Weekly injectionLicensed for weight management
Ozempic (semaglutide)Single agonist, GLP-1Weekly injectionLicensed for type 2 diabetes, not weight loss
RetatrutideTriple agonist, GIP/GLP-1/glucagonWeekly injectionInvestigational, not yet licensed in the UK

This comparison is general information, not a recommendation or an offer to supply. Which medicine, if any, is appropriate is a decision for your prescriber after a full assessment.

Read the full comparisons
Mounjaro vs Wegovy Mounjaro vs Ozempic Tirzepatide vs semaglutide Retatrutide vs tirzepatide (Mounjaro)

Common questions about weight loss treatment

What are weight loss injections? +

Weight loss injections are prescription-only medicines, usually GLP-1 based, given once weekly. They mimic gut hormones that reduce appetite and slow how quickly the stomach empties, so you feel fuller for longer and tend to eat less. In the UK they can only be supplied after a prescriber confirms they're suitable for you.

What's the difference between Mounjaro, Wegovy and Ozempic? +

Mounjaro (tirzepatide) acts on two hormone pathways, GLP-1 and GIP. Wegovy and Ozempic are both semaglutide and act on one (GLP-1). Mounjaro and Wegovy are licensed in the UK for weight management; Ozempic is licensed for type 2 diabetes, not weight loss.

Am I eligible for weight loss injections? +

They're usually considered at a BMI of 30 or above, or 27 or above alongside a weight-related condition such as type 2 diabetes, high blood pressure or sleep apnoea. A prescriber confirms eligibility after a full assessment, including identity and weight verification, not on a questionnaire alone.

Can I buy weight loss injections over the counter? +

No. They're prescription-only medicines, so they can't be sold over the counter or selected on demand. A prescriber assesses you and sets the dose, and patients start at the lowest strength and step up gradually.

PharmaRoo provides information about prescription-only weight loss medicines to help you understand your options and check eligibility. It is not medical advice and is not an advertisement to buy a specific medicine. A UK-registered prescriber decides what, if anything, is appropriate. Page last reviewed: June 2026.