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AOD9604 (HGH Fragment 177-191): The Fat-Burning Peptide Research Guide
AOD9604 (HGH Fragment 177-191): The Fat-Burning Peptide Research Guide
AOD9604 is a modified fragment of the human growth hormone (HGH) molecule, specifically the amino acid sequence 177-191, developed to replicate the lipolytic (fat-burning) effects of growth hormone without its growth-promoting or blood glucose effects. It has been studied extensively in obesity research and remains a prominent compound in metabolic and fat-loss research protocols.
1. What Is AOD9604?
AOD9604 (also called HGH Frag 177-191) is a 15-amino-acid peptide corresponding to the C-terminal region of human growth hormone, with a tyrosine substitution to enhance stability. It targets the growth hormone receptor’s lipolytic signaling pathways while avoiding IGF-1 elevation and hyperglycemia associated with full-length GH.
- Peptide type: Synthetic HGH fragment (177-191)
- Other name: HGH Frag, AOD-9604
- Administration: Subcutaneous injection
- Core effect: Lipolysis (fat oxidation) without growth promotion
- Status: Research compound (clinical obesity trials completed)
2. Mechanism of Action
AOD9604 separates fat-burning from growth signaling:
- Lipolytic signaling: Activates lipolysis pathways in adipose tissue through GH-receptor-related signaling
- Fat oxidation: Promotes breakdown of triglycerides into free fatty acids for energy use
- No IGF-1 stimulation: Does not significantly elevate IGF-1, avoiding growth and mitogenic effects
- Minimal glucose impact: Lacks the diabetogenic effects associated with full-length GH
3. The Research Landscape
| Research area | Reported findings |
|---|---|
| Obesity clinical trials | Weight and fat mass reductions reported in phase 2 studies |
| Lipolysis models | Increased free fatty acid release in adipose tissue studies |
| Cartilage repair | Animal studies report improved cartilage healing with AOD9604 |
| Safety profile | No significant glucose or IGF-1 elevation observed in trials |
AOD9604 reached phase 2 clinical trials for obesity but was not ultimately approved; it continues to be widely used in metabolic research.
4. Research Applications
- Fat metabolism research: Lipolysis, fatty acid oxidation, and fat loss protocols
- Weight management research: Adjunct to caloric restriction and exercise interventions
- Cartilage research: Chondrocyte activity and cartilage repair models
- Metabolic safety research: Fat-burning without GH’s metabolic side effects
For related metabolic research compounds, see our MOTS-c guide and 5-Amino-1MQ guide.
5. Dosing and Protocol Notes
- Typical research dose: 300-500 mcg, 1-3 times per day
- Administration: Subcutaneous injection; often dosed before meals or training
- Reconstitution: Use bacteriostatic water; see our reconstitution and dosage guide
- Protocol duration: Research cycles commonly run 4-12 weeks with dietary monitoring
6. Side Effects and Considerations
- Injection site reactions: Local redness or discomfort
- Minimal systemic effects: No significant IGF-1 or glucose elevation in clinical data
- Mild nausea or headache: Reported occasionally at higher doses
- Contraindications: Pregnancy, lactation, and active malignancy
7. Frequently Asked Questions
Is AOD9604 a growth hormone? It is a fragment of HGH (amino acids 177-191), engineered to retain fat-burning effects while excluding growth-promoting activity.
Does AOD9604 require a strict diet? Fat-loss research outcomes are enhanced when combined with caloric control and exercise, though lipolysis occurs at the cellular level.
How does it compare with GLP-1 peptides? GLP-1 peptides (like semaglutide) reduce appetite and food intake; AOD9604 targets fat oxidation directly — complementary mechanisms in weight research.
Related Reading
- MOTS-c Metabolic Peptide Guide
- 5-Amino-1MQ Metabolic Guide
- Semaglutide Research Guide
- Peptides for Athletic Performance
Shop Related Research Compounds
Browse our research catalog, including AOD9604 (HGH Fragment 177-191), MOTS-c, and 5-Amino-1MQ, all supplied with batch COAs.
Disclaimer: This article is for educational and research purposes only. AOD9604 is a research compound not approved for general human use. Always consult qualified professionals regarding research protocols.
