The UK's plain-English guide to Mounjaro, Wegovy, the Wegovy pill and Ozempic.
No hype, no sales pitch, no jargon. Careful guides, honest calculators and official UK sources, written for real people making real decisions about GLP-1 medicines.
Average weight loss on tirzepatide 15 mg in SURMOUNT-1
Cut in heart attacks and strokes on semaglutide 2.4 mg (SELECT)
Average loss on the new Wegovy pill at full dose (OASIS 4)
Clicks in every full UK Mounjaro KwikPen dose, at any strength
Buying privately? Start with verified pharmacies
These three independent services manually check every UK pharmacy they list. GPhC registration, genuine prescribing and proper delivery, all confirmed by a human before a pharmacy appears. It is the safest shortcut we know.
Monj.co.uk
GPhC registration, prescribing standards, cold-chain delivery and pricing honesty, checked by hand before listing.
Check verified providers → Manually verified For Wegovy injectionsiGovy.co.uk
Genuine Novo Nordisk stock, real ID and BMI checks and proper refrigerated delivery, confirmed for every provider.
Check verified providers → Manually verified For the Wegovy pilloGovy.co.uk
Tracks the 2026 tablet rollout and verifies which pharmacies are genuinely licensed to supply the new pill.
Check verified providers → Manually verified For Foundayo (orforglipron)Dayo.co.uk
Tracks which UK pharmacies are licensed to supply the new daily tablet, and what they charge once consultation and delivery are counted.
Check verified providers →Understand the medicines, properly
Four names dominate the headlines, but they are not interchangeable. Here is what each one actually is, what the trials found, and who can get it in the UK.
What is Mounjaro (tirzepatide)?
The dual GIP/GLP-1 weekly injection. Up to 20.9% average weight loss in SURMOUNT-1, and the winner of the SURMOUNT-5 head-to-head. Doses, KwikPen versions, side effects and NHS access via NICE TA1026.
Read the guide → The cardiovascular proofWhat is Wegovy (semaglutide)?
The weekly 2.4 mg injection, plus the 7.2 mg dose approved in January 2026. STEP and SELECT results explained.
Read the guide → New · June 2026What are Wegovy pills?
The UK's first daily oral GLP-1 for weight management. OASIS 4 results, dosing and the strict fasting rules.
Read the guide → The misunderstood oneWhat is Ozempic?
The diabetes medicine everyone talks about for weight loss, and why it is not licensed for that in the UK.
Read the guide → Head-to-headMounjaro vs Wegovy
The honest comparison. Efficacy, side effects, access and cost, with the latest trial data.
Compare →Calculators people actually bookmark
Accurate pen mechanics, UK strengths, mobile-first, zero waffle.
Mounjaro click calculator
Exact clicks per dose for any UK KwikPen strength, V1 vs V2 pen logic, doses per pen, supply days and true cost per dose.
Open calculator →One UK Mounjaro KwikPen injection is always 60 clicks and 0.6 ml. The strength changes the concentration, never the volume.
Wegovy click calculator
Click counting for all five UK strengths. Verify your dose and plan supply.
Open → All three pensOzempic click calculator
Clicks, pen contents and concentration maths for every UK Ozempic pen.
Open → Protect your muscleProtein needs calculator
A realistic daily target. Actual, ideal or adjusted body weight, in kg, lbs or stone.
Open →The day-to-day stuff nobody tells you
Eating, drinking, travelling, storing, tracking, and what happens when you stop.
Mounjaro nutrition guide
What to eat when your appetite disappears.
Read → NutritionWegovy nutrition guide
Meals that protect muscle on semaglutide.
Read → HydrationHydration on GLP-1s
Fluid targets that actually prevent side effects.
Read → TravelTravelling with Mounjaro
Insurance, airports, cold storage abroad.
Read → Travel · NewTravelling with Wegovy pills
No fridge, no needles, no cooling kit. The easiest GLP-1 to pack.
Read → Side effectsSide effects, managed
What helps, and the red flags that mean call someone.
Read →Buy safely. Check everything.
Falsified weight-loss pens are a genuine UK problem. The MHRA has seized hundreds, and some contained insulin. Two minutes of checking protects you.
Spot fake GLP-1 medicines
The MHRA checklist, the gov.uk seller checker and the GPhC register. In one place.
Stay safe → Cold chainHow Mounjaro should arrive
What proper delivery looks like, and when to reject a parcel.
Check standards → ID checksWhy verification matters
Any pharmacy that skips ID checks is breaking the rules. What legit looks like.
Learn more →Independent. Human-reviewed. Never a pharmacy.
GLP1Guide.co.uk is an independent editorial project. We don't prescribe or dispense, and we never will. The medical content stands on its own against NICE, NHS, MHRA and GPhC sources, and our funding model is documented openly on the about page.
Editorial policy
Sourcing hierarchy, human review, update schedule and corrections. Documented in full.
Read it →References & official sources
Show all 5 cited sources, with study authors +
- NICE TA1026. Tirzepatide for managing overweight and obesity: www.nice.org.uk/guidance/ta1026
- NICE TA875. Semaglutide for managing overweight and obesity: www.nice.org.uk/guidance/ta875
- NHS England. Interim commissioning guidance for tirzepatide (Mounjaro): www.england.nhs.uk/long-read/interim-commissioning-guidance-nice-ta1026-tirzepatide/
- MHRA. Yellow Card reporting scheme: yellowcard.mhra.gov.uk/
- GPhC. Check a pharmacy registration: www.pharmacyregulation.org/registers