Comparing injection prices, honestly
Which weekly injection costs less depends on the dose stage, the pharmacy and today's offers, so this page gives you live prices for both, and the method for comparing them like for like.
Last checked 3 Nov 2026
The honest method: compare month by month at matching treatment stages, using live checked prices on the same day. Starter against starter, maintenance against maintenance. Both ladders step up over months, and pharmacies price every step separately, so a single headline number comparing the two medicines is always misleading. Monj shows how to compare pharmacy prices for Mounjaro dose by dose, and the same method for Wegovy sits in the iGovy guide to comparing online pharmacy prices.
Live prices, both medicines
- Total
- £44.00
- Total
- £63.00
- Total
- £65.00
- Total
- £92.00
- Total
- £110.00
- Total
- £145.00
Cheapest delivered Wegovy pen at each dose, live. Every pharmacy, ranked, is on the Wegovy price comparison UK.
Beyond the weekly injections
The comparison does not end with the two injections. Oral semaglutide pricing has its own dedicated page on pill versus injection prices and full tracking on Ogovy, while Dayo follows the newest oral treatment as UK pricing establishes. If you are already on one injection and weighing the other, the switching from Mounjaro guide covers how prescribers handle the change. Suitability between different medicines is always the prescriber's call, and price is a fair factor between suitable options rather than the deciding vote.
Comparison questions
Which weight loss injection is cheapest in the UK?
It depends on the dose stage, the pharmacy and the current offers, which is why a static answer is always out of date. Compare live Wegovy prices on this site and live Mounjaro prices on the Monj sister site, at the same treatment stage, on the same day.
Why compare at the same treatment stage?
Both medicines use step up dose ladders and pharmacies price each step separately. Comparing one medicine's starter dose against the other's maintenance dose produces a misleading gap. Month by month at matching stages is the honest comparison.
Can I just pick whichever is cheaper?
No. They are different prescription only medicines with different active ingredients, and suitability is a prescriber decision made at consultation. Price is a legitimate factor between suitable options, never the deciding vote over clinical advice.
What about non injection options?
Oral treatments exist and are tracked on the network's sister sites. The pill versus injection price question for semaglutide has its own dedicated comparison page on iGovy.
Sources referenced on this page
Standing primary references for every iGovy page:
- Wegovy (semaglutide) Summary of Product Characteristics and Patient Information Leaflet, electronic medicines compendium
- MHRA Drug Safety Update: GLP-1 receptor agonists
- NICE TA875: semaglutide for managing overweight and obesity
- General Pharmaceutical Council register of pharmacies
- MHRA Yellow Card scheme
