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Pharmacy Switch Policies Independent Review
Reviewed 13 October 2026
UK Pharmacy Policy Index

Switching from Mounjaro to Wegovy Pharmacy Policies

With recent Mounjaro price fluctuations in the UK, many patients are looking at swapping to Wegovy. Pharmacies set independent rules, and policies depend on pricing, supply, and strict internal clinical procedures.

Because of rising costs, some patients now consider Wegovy as a more affordable choice. As a result, pharmacies are seeing more switching requests. Some pharmacies require a new prescription, while others manage changes according to their own internal procedures.

Clinical Check Required: Before switching from Mounjaro to Wegovy, pharmacies may need to run extra checks. Your prescriptions, current BMI, and any past side effects can affect the decision. The tables below are a guide only. Each pharmacy may treat your case differently.

Cautious Swapper Pharmacies

These independent pharmacies allow swapping to Wegovy, but only with stricter checks and requirements.

Pharmacy BMI Switch Days Evidence Required 5 mg 7.5 mg 10 mg 12.5 mg 15 mg
Medicine Marketplace 30 / 27 28 Current BMI → 0.25mg → 0.25mg → 0.25mg → 0.25mg → 0.25mg

Swap but Drop Pharmacies

These pharmacies allow immediate switching from Mounjaro to Wegovy, but limit the supply strictly to the lowest starter dose regardless of previous tolerance.

Pharmacy BMI Switch Days Evidence Required 5 mg 7.5 mg 10 mg 12.5 mg 15 mg
Happy Pharmacy 26 7 Proof of Mounjaro dose → 0.25mg → 0.25mg → 0.25mg → 0.25mg → 0.25mg
OnlineMeds 20 7 Proof of Mounjaro dose → 0.25mg → 0.25mg → 0.25mg → 0.25mg → 0.25mg
Tribelle 22 7 Initial GLP starting BMI → 0.25mg → 0.25mg → 0.25mg → 0.25mg → 0.25mg

Hot Swap Pharmacies

These pharmacies allow a direct switching transition from higher Mounjaro doses to corresponding higher Wegovy doses with minimal administrative barriers.

Pharmacy BMI Switch Days Evidence Required 5 mg 7.5 mg 10 mg 12.5 mg 15 mg
Bolt Pharmacy21—Proof of Mounjaro dose→ 1mg→ 1mg→ 1.7mg→ 1.7mg→ 2.4mg
Cuva Health227Proof of Mounjaro / Initial BMI→ 0.5mg→ 1mg→ 1.7mg→ 2.4mg→ 2.4mg
Dr Weightmans217Proof of Mounjaro / Initial BMI→ 1mg→ 1.7mg→ 1.7/2.4mg→ 2.4mg→ 2.4mg
Farmeci247Proof of Mounjaro dose→ 0.5mg→ 1mg→ 1.7mg→ 1.7mg→ 2.4mg
Fella Health217Proof of Mounjaro dose→ 1mg→ 1mg→ 1.7mg→ 1.7mg→ 2.4mg
Fylde Clinic237Proof of Mounjaro dose→ 0.25mg→ 0.5mg→ 0.5mg→ 1mg→ 1mg
Get A Drip19.57Proof of Mounjaro dose→ 0.5mg→ 0.5mg→ 1mg→ 1mg→ 1mg
Juniper227Proof of Mounjaro dose→ 0.5mg→ 1mg→ 1.7mg→ 2.4mg→ 2.4mg
Lloyds Pharmacy257Proof of Mounjaro dose→ 1mg→ 2.4mg→ 2.4mg→ 2.4mg→ 2.4mg
Lotus Weight Loss207Proof of Mounjaro dose→ 0.5mg→ 1mg→ 1.7mg→ 2.4mg→ 2.4mg
Medicspot217Proof of Mounjaro dose→ 0.5mg→ 1mg→ 1.7mg→ 1.7mg→ 1.7mg
MSH Weight Loss207Proof of Mounjaro / Initial BMI→ 0.5mg→ 0.5mg→ 1mg→ 1mg→ 1mg
My London Pharmacy247Proof of Mounjaro dose→ 0.5mg→ 1mg→ 1.7mg→ 1.7mg→ 2.4mg
Oushk227Proof of Mounjaro dose→ 0.5mg→ 1mg→ 1mg→ 1.7mg→ 2.4mg (7.2mg Pos)
Pharmacy2U257Proof of Mounjaro dose→ 1mg→ 2.4mg→ 2.4mg→ 2.4mg→ 2.4mg
Pharmacy Online257Proof of Mounjaro / Initial BMI→ 1mg→ 1mg→ 1.7mg→ 1.7mg→ 2.4mg
PillSorted247Proof of Mounjaro / Initial BMI→ 0.25mg→ 0.5mg→ 1mg→ 1mg→ 1mg
PrivateDoc217Proof of Mounjaro / Initial BMI→ 0.5mg→ 1mg→ 1mg→ 1mg→ 1mg
Quickmeds247Proof of Mounjaro dose→ 0.5mg→ 0.5mg→ 0.5mg→ 0.5mg→ 0.5mg
Simple Online Pharmacy247Proof of Mounjaro dose→ 0.5mg→ 1mg→ 1mg→ 1.7mg→ 1.7mg
WePrescribe217Proof of Mounjaro doses→ 0.5mg→ 1mg→ 1mg/1.7mg→ 1.7mg→ 1.7mg/2.4mg

Switching from Mounjaro to Wegovy: Clinical Data?

Understanding the off-licence nature of cross-titrating GLP-1 and GIP receptor agonists.

No Direct Trial Data

There are currently no published clinical trials looking at people switching directly from Mounjaro (tirzepatide, at any dose) to Wegovy (semaglutide, at any dose).

Tested Separately

The major studies of these medicines tested them separately or compared them side by side, but did not examine the physiological effect of moving from one to the other.

Off-Licence Prescribing

In the UK, such a switch may still be offered by a prescriber or pharmacy, but this type of prescribing is considered off-licence (used outside strict licence conditions).

Careful Monitoring

A switch can be made if the prescriber believes it is appropriate, but it should be done with careful monitoring. Outcomes may differ from standalone clinical studies.

Sources referenced on this page

Standing primary references for every iGovy page: