The GLP Guidebook blog
NHS rules, list prices and plain-English explainers on GLP‑1 medicines in the UK. Every fact has a source, and nothing here is for sale.
Posts here use NICE and MHRA sources, prices in £ and 999 or NHS 111 for emergencies. We never name or link to a seller.
NHS and access
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Can I get Mounjaro on the NHS in 2026? The rules in England, Scotland, Wales and Northern Ireland
Possibly, but access is rationed and depends on where you live.
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Can you get Wegovy on the NHS? Specialist services, the 2-year limit and the heart route
Sometimes. In England, Wegovy for weight is only prescribed in specialist weight management services, for up to 2 years, to adults with a BMI of 35 or more and a weight-related condition.
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Why does the NHS use lower BMI cut-offs for some ethnic groups?
Because type 2 diabetes and heart risk rise at a lower BMI in some groups.
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Can I switch from private to NHS Mounjaro?
Only if you meet the NHS criteria when you switch, not the BMI you had before starting privately.
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What is the NICE 5% rule, and when does the NHS stop a weight-loss jab?
NICE asks for a review if you have lost less than 5% of your starting weight after 6 months.
Prices and costs
Medicines
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Wegovy vs Mounjaro in the UK: how do they compare?
Both are weekly injections licensed in the UK for weight.
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Is there a weight-loss pill in the UK? Wegovy tablets and Foundayo (orforglipron) explained
Yes. Two daily GLP-1 tablets are licensed for weight in the UK: Wegovy tablets (oral semaglutide), approved on 11 June 2026, and Foundayo (orforglipron), approved on 10 August 2026.
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What is Wegovy 7.2 mg, and how does it compare with 2.4 mg?
Wegovy 7.2 mg is a higher weekly dose of semaglutide, approved in the UK in 2026 for adults with a BMI of 30 or more.
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Generic liraglutide vs Saxenda: is there a difference?
Generic liraglutide contains the same medicine as Saxenda, at the same doses, with the same 12-week stopping rule.
Side effects and safety
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Should you stop Mounjaro or Wegovy before surgery or an anaesthetic?
In the UK, the advice is to keep taking it unless your doctor says otherwise.
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Mounjaro, Wegovy, pregnancy and the pill: what does the MHRA say?
The MHRA says not to take GLP-1 medicines in pregnancy or while trying to conceive.
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Can Mounjaro or Wegovy cause pancreatitis or gallstones?
They can, but pancreatitis is uncommon: the UK labels put it at up to 1 in 100 people.
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What are the side effects of Mounjaro, and how do you report them?
The most common are feeling sick, diarrhoea, vomiting, constipation and tummy pain, mostly while the dose is going up.
Diabetes
Daily life
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What happens when you stop Mounjaro or Wegovy?
Weight, blood sugar and blood pressure usually drift back up.
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Can you fast in Ramadan on Mounjaro or Wegovy?
Many people do, with planning. UK pharmacy advice, citing IDF-DAR, is to finish dose increases 4 to 6 weeks before Ramadan.
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Can you take Mounjaro or Wegovy pens on holiday abroad?
Yes. GOV.UK allows syringes, essential medicines and cooling gel packs in hand luggage at UK airports.
Buying safely and the rules
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Is it safe to get Mounjaro or Wegovy from an online pharmacy in the UK?
It can be legal and safe if a registered pharmacy supplies it on a prescription after a proper check.
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How do you spot fake Mounjaro or an illegal weight-loss jab in the UK?
Often you can’t by looking: the MHRA warns that some fakes closely copy real pens.
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Free tools for the UK
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New here? Start with the 9 guides
- 01Weight, BMI and ethnicity in the UKUnderstand
- 02What GLP‑1 medicines doUnderstand
- 03Your options, and where medicines fitDecide
- 04Should I consider a GLP‑1?Decide
- 05Side effects and risksDecide
- 06NHS, private prescriptions and the medicinesDo it safely
- 07Choosing a provider safelyDo it safely
- 08Life on a GLP‑1Live with it
- 09Stopping and the long termLive with it
The monthly UK update
NHS changes, approvals, list prices and safety alerts. Once a month, nothing else.
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