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Best Peptides to Lose 20 Pounds Ranked: Mechanism Comparison
| Peptide Compound | Primary Mechanism | Mean Weight Loss (Clinical Data) | Appetite Suppression | Lipolysis Activation | Research Stage | Professional Assessment ||—|—|—|—|—|—|| Tirzepatide (dual GIP/GLP-1) | Incretin receptor agonist. Slows gastric emptying,
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- | Peptide Compound | Primary Mechanism | Mean Weight Loss (Clinical Data) | Appetite Suppression | Lipolysis Activation | Research Stage | Professional Assessment ||—|—|—|—|—|—|| Tirzepatide (dual GIP/GLP-1) | Incretin receptor agonist. Slows gastric emptying, reduces appetite signaling, enhances insulin sensitivity | 20.9% at 72 weeks (SURMOUNT-1, n=2,539) | Strong. Hypothalamic GLP-1 and GIP receptor activation | Indirect. Via reduced caloric intake and improved insulin sensitivity | FDA-approved (Zepbound) | Highest documented weight loss in Phase 3 trials. Gold standard for significant reduction || Semaglutide (GLP-1) | GLP-1 receptor agonist. Delays gastric emptying, suppresses ghrelin rebound | 14.9% at 68 weeks (STEP-1, n=1,961) | Strong. Direct GLP-1 hypothalamic signaling | Indirect. Via caloric deficit | FDA-approved (Wegovy) | Proven efficacy with extensive safety data. Second only to tirzepatide in magnitude || CJC-1295 + Ipamorelin | Growth hormone secretagogue. Stimulates