GLP‑1 questions, answered
One question per page, answered in a few hundred words from published sources. Each answer links to the guide with the full picture.
Written for the UK: list prices in £, NHS rules for each of the 4 nations, MHRA approvals and 999 or 111 for emergencies.
All answers
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Can I get Mounjaro on the NHS?
Yes, for some adults, and the rules differ by nation.
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How much is Mounjaro in the UK?
The UK list price of a Mounjaro (tirzepatide) KwikPen is £133 to £330 before VAT, depending on strength.
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Can my GP prescribe Wegovy?
Not usually, for weight loss on the NHS.
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Are weight-loss jabs free in Scotland, Wales and Northern Ireland?
On an NHS prescription, yes. Prescriptions are free in Scotland, Wales and Northern Ireland, so an NHS pen of Mounjaro (tirzepatide) or Wegovy (semaglutide) costs you nothing there.
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What BMI do you need for Mounjaro in the UK?
The UK licence for Mounjaro (tirzepatide) covers adults with a BMI of 30 or more, or 27 to 30 with a weight-related condition.
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Why did Mounjaro's price go up?
Eli Lilly raised the UK list price of Mounjaro (tirzepatide) on 1 September 2025, from £92–£122 to £133–£330 a pen.
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Is it safe to buy Mounjaro online in the UK?
It can be, if a registered UK pharmacy supplies Mounjaro (tirzepatide) on a prescription after a proper check.
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How much is Wegovy in the UK?
The latest official UK list price we found for a Wegovy (semaglutide) pen of 4 weekly doses is £73.25 for 0.25 to 1 mg, £124.53 for 1.7 mg and £175.80 for 2.4 mg, before VAT.
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Is the Wegovy pill available in the UK?
Yes, on private prescription. The MHRA approved Wegovy (semaglutide) tablets for weight management on 11 June 2026.
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Is Zepbound available in the UK?
No. Zepbound is Eli Lilly's brand of tirzepatide for weight in the US and Japan, and we found no UK licence for it.
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Can I get Ozempic for weight loss in the UK?
Not as a licensed use. In the UK, Ozempic (semaglutide) is licensed only for type 2 diabetes, and the MHRA lists it as not licensed for weight loss.
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When should I call 999 or 111 on a GLP-1?
On Mounjaro (tirzepatide), Wegovy or Ozempic (semaglutide), call 999 for sudden or severe stomach pain, stomach pain when you can't poo or fart, vomiting blood or green vomit, a swelling throat or struggling to breathe, or suddenly losing sight.
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How do I report a side effect (Yellow Card)?
Report a suspected side effect online on the MHRA's Yellow Card website, in the free Yellow Card app, or by calling 0800 731 6789 (Monday to Friday, 9am to 5pm).
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How long can Mounjaro stay out of the fridge?
Once you've started a Mounjaro (tirzepatide) KwikPen, the UK leaflet allows up to 30 days out of the fridge at no more than 30 °C, then the pen must be thrown away.
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Should I stop Mounjaro before surgery?
Not usually, under UK advice. A 2025 consensus from 8 UK bodies, including the Royal College of Anaesthetists, says people on Mounjaro (tirzepatide) or GLP-1 medicines like Wegovy should keep taking them before planned surgery.
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How do I dispose of used pens and needles in the UK?
Put each used needle straight into a sharps bin, never loose in household rubbish.
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What is retatrutide and is it legal in the UK?
Retatrutide is not licensed in the UK, or anywhere, as of October 2026.
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Does Mounjaro stop the pill working?
Mounjaro (tirzepatide) can make the contraceptive pill less reliable, the MHRA says.
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Can I take Mounjaro during Ramadan?
Yes, with planning, says advice for UK pharmacists.
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What is the waist-to-height ratio and how do I use it?
Your waist-to-height ratio is your waist divided by your height, in the same units.
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