can i switch to tirzepatide from semaglutide and key differences, weight loss results (2026) Tirzepatide vs. Semaglutide: What's the

The injection versus oral supplement debate really comes down to your individual situation

Davioud-Charvet et al., 2001

Analytical Chemistry, 88(7), 41224129

Winner: TIE Round 2: Effectiveness Modern studies looking at the effectiveness of anti-obesity medications look at the percentage of body weight lost after a year of treatment with a particular dose of the medication

To overcome the very short half-life of GLP-1, DPP-IV inhibitors have been developed

Jump to: Comparison at a glance | Tirzepatide (Mounjaro) | Semaglutide (Wegovy) | Liraglutide (Saxenda) | NHS vs private access | Side effects comparison | Cost analysis | How to choose | Medications in development | Frequently asked questions | Take home message Based on clinical trial data, the most effective weight-loss injection available in the UK in 2026 is tirzepatide (Mounjaro), with an average weight loss of 22.5% of starting body weight after 72 weeks at the maximum 15 mg dose