Best Peptides for Fat Loss: GLP-1 Agonists, GH Secretagogues & More

Fat loss is one of the most actively researched applications of peptide therapy. Several classes of peptides have shown significant effects on body composition, appetite regulation, and metabolic health.

GLP-1 Receptor Agonists

Semaglutide

• •The most studied peptide for weight loss
• •Average 14.9% body weight reduction in clinical trials
• •Works by reducing appetite and slowing gastric emptying
• •FDA-approved for weight management

Tirzepatide

• •Dual GIP/GLP-1 agonist (targets two pathways)
• •Up to 22.5% weight loss in clinical trials (SURMOUNT-1)
• •May be more effective than Semaglutide for some individuals
• •Also improves insulin sensitivity

Growth Hormone Secretagogues

Elevated GH levels promote lipolysis (fat breakdown):

CJC-1295 + Ipamorelin

• •Increases GH secretion, promoting fat metabolism
• •Preserves lean muscle mass during caloric deficit
• •Improves sleep quality (poor sleep is linked to weight gain)

Tesamorelin

• •FDA-approved for reducing visceral abdominal fat in specific populations
• •Potent GHRH analogue
• •Specifically targets visceral fat stores

Other Fat Loss Peptides

[AOD-9604](/blog/aod-9604-fat-loss-peptide)

• •A modified fragment of human growth hormone (HGH 176-191)
• •Stimulates lipolysis without affecting blood sugar or growth
• •Targets fat cells specifically

MOTS-c

• •Mitochondrial-derived peptide
• •Improves metabolic flexibility and fat oxidation
• •Enhances exercise capacity

Peptidrop's Approach

Peptidrop's AI protocol generator evaluates fat loss goals alongside safety profiles. It can generate stacks that combine appetite regulation (GLP-1 pathway) with metabolic enhancement (GH pathway) while monitoring for potential interactions. For more on Semaglutide specifically, see our complete Semaglutide guide.

For research on peptides and fat metabolism, see PubMed. The STEP clinical trials for Semaglutide remain some of the most cited studies in metabolic peptide research.