Hormonal
Semaglutide (2.4 mg weekly) produces significantly greater weight loss than liraglutide (3.0 mg daily), orlistat, and phentermine in obese individuals.
If you have obesity or overweight with related health risks, Semaglutide (2.4 mg weekly) is currently the most effective pharmacological option for weight loss, significantly outperforming Liraglutide, Orlistat, and Phentermine. You must start at a low dose (0.25 mg) and increase it every 4 weeks to minimize stomach side effects. This medication works best when combined with diet and exercise changes.
Results demonstrated that semaglutide resulted in significantly greater weight loss compared to liraglutide, with a mean weight reduction of 15.8% vs. 6.4%, respectively... The findings of the trial concluded that semaglutide 2.4 mg administered weekly is significantly more effective than liraglutide 3.0 mg administered daily for weight loss in adults without diabetes who are overweight or obese
Why this rating
Based on multiple randomized controlled trials (Wilding, Marso, Rubino) and large retrospective cohorts with statistically significant p-values (<0.001).
Source
Comparative Effectiveness of Semaglutide, Liraglutide, Orlistat, and Phentermine for Weight Loss in Obese Individuals: A Systematic Review
Jay Prakash Patel et al. · Cureus · 2025
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