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Research onlyWeight lossSubcutaneousEvidence 2/5

HGH Fragment 176-191

Also known as: HGH Frag 176-191

A synthetic C-terminal fragment of human growth hormone claimed to stimulate adipocyte lipolysis without binding the GH receptor or raising IGF-1, though human fat-loss evidence is weak.

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HGH Fragment 176-191
Drug class
Growth hormone C-terminal lipolytic fragment
Primary targets
Adipocyte lipid metabolism
Dose reference
No established human dose; research-only
Half-life
Very short (minutes); poorly characterized
Developer / origin
Ng et al. (Monash University)
Reference year
1994
Evidence score
2/5 - Weak
Evidence 2/5

Weak

Animal and isolated-tissue studies show the hGH 176-191 domain stimulates lipolysis without GH's IGF-1 effects, but there is no convincing controlled human fat-loss evidence; its optimized analog AOD-9604 failed a human obesity trial.

Mostly animal, ex vivo, cell, or indirect evidence.

Evidence basis

  • Synthetic hGH 177-191 reduced adipose mass and lipogenesis in obese mice
  • Stimulated hormone-sensitive lipase without binding the GH receptor
  • No controlled human fat-loss trial for the unmodified fragment
  • Optimized analog AOD-9604 failed human obesity development

How to read this entry

Dose references and half-life values are pulled from trial protocols, labels, reviews, or published summaries where available. They are context for research and comparison, not a personal dosing recommendation.

Status matters: approved drugs have regulated indications; investigational compounds are still being studied; research-only peptides do not have established human dosing, safety, or efficacy for consumer use.

HGH Fragment 176-191 guides

Read the matching guide or adjacent research pages for more context.

HGH Fragment 176-191 Peptide: Lipolysis Claims and Honest EvidenceHGH Fragment 176-191 is the C-terminal lipolytic fragment of growth hormone with animal data, but no convincing human fat-loss evidence.Peptides for Weight Loss: GLP-1s, Tirzepatide, Retatrutide and What WorksA broad guide to weight-loss peptides, from approved GLP-1 and dual-incretin medicines to investigational retatrutide, cagrilintide and other research compounds.GLP-1 for Weight Loss: How Well They Work, and What They CostGLP-1 weight-loss drugs produce 8–21% average body-weight reduction in trials. The honest version weighs eligibility, results, cost, side effects, and the rebound after you stop.What Is GLP-1? The Hormone, the Drugs, and Why They WorkGLP-1 is a hormone your gut releases after eating. The agonist drugs amplify that effect — slowing digestion, blunting appetite and steadying blood sugar.

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