Retatrutide, a triple-hormone injection, produced up to 30.3% average weight loss in the phase 3 TRIUMPH-1 trial. Not yet approved in the UK.

Research shows weight regain is likely when you stop Mounjaro suddenly. Tapering slowly and building habits helps you keep the weight off.

Mounjaro (22.5%) and Wegovy 7.2 mg (20.7%) are the UK's most effective weight-loss injections in 2026. Compare costs, side effects and NHS access.

Ozempic is only available on the NHS for type 2 diabetes, not weight loss. Wegovy and Mounjaro are the UK's licensed weight-loss injections.

Wegovy is available on the NHS only through specialist weight-management services, for a BMI of 35+ with a weight-related condition. See how to apply.

Mounjaro and Wegovy are available on the NHS for those who are eligible. Mounjaro is prescribed by GPs in a phased rollout; Wegovy via specialist services.

Mounjaro is on the NHS for type 2 diabetes and, via a phased rollout, for some people with obesity. See the 2026 eligibility criteria and costs.

Compare the UK's top medicated weight-loss programmes. Second Nature, Voy, Juniper, Numan, and Piko compared on evidence, support, and pricing for 2026.

Our 7-day Mounjaro meal plan includes protein-rich recipes, side effect management tips, and practical portion guidance. Click here to download it now.

Free UK eligibility checker for Mounjaro and Wegovy: BMI 30+ private, BMI 40+ NHS (TA1026), or BMI 27+ with a condition. Ethnic thresholds applied.