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AOD-9604

AOD-9604 (HGH Fragment 176–191)

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A fragment of human growth hormone (amino acids 176–191) studied specifically for fat metabolism without the growth-promoting or glucose-altering effects of full HGH.

AOD-9604 is not approved by the FDA for human use. It is sold strictly for research purposes only and is not intended for human consumption, diagnosis, treatment, or prevention of any disease or condition. Purchase and use is entirely at your own risk.

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What it is

AOD-9604 is a modified fragment of the C-terminus of human growth hormone, specifically amino acids 176 through 191 with an added tyrosine residue at the N-terminus. It was developed by Monash University in Australia.

The rationale for isolating this fragment was that the fat-burning properties of HGH appear to reside in this region, while growth-promoting effects are mediated elsewhere. AOD-9604 received GRAS (Generally Recognized As Safe) designation from the FDA for oral use, making it one of the few research peptides with any formal US regulatory recognition.

What research shows

  • Stimulates fat breakdown (lipolysis) and inhibits fat formation (lipogenesis) in animal models
  • No significant effect on IGF-1 levels, distinguishing it from full HGH
  • No impact on blood glucose — unlike growth hormone
  • Some Phase 2 clinical data for weight loss (results were modest)
  • Ongoing research into osteoarthritis treatment with promising early signals

What remains unknown

  • Clinically meaningful weight loss benefit in humans — trials to date have been underwhelming
  • Long-term safety profile
  • Optimal route of administration (oral vs. injection) for systemic fat loss

Administration basics

Common use cases

Fat loss support, body composition. Often used alongside other peptides in weight management protocols.

Half-life

~30 minutes.

Administration

Subcutaneous injection. Oral formulations studied but systemic bioavailability is limited.

Source this compound

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Research Protocols & Common Usage

Doses used in research

  • Phase 2 clinical trials used 500mcg/day subcutaneously
  • Community protocols commonly report 300–500mcg per injection, once daily

Administration routes studied

Subcutaneous injection (most common in research)Oral formulations studied but systemic bioavailability is limited

Typical protocol duration

Phase 2 trials ran 12 weeks. Community protocols commonly report 8–12 week cycles.

Common stacking protocols

  • AOD-9604 + Ipamorelin/CJC-1295 — combined in body composition protocols targeting fat loss with GH support
  • AOD-9604 + Semaglutide — occasionally combined in community weight management protocols; no formal research on this combination

Contraindications & combinations to avoid

  • Full-length HGH — combining AOD-9604 with exogenous growth hormone has overlapping mechanisms and no established benefit
  • Active thyroid disease — fat metabolism pathways may be affected; consult a physician

Dosing information reflects doses used in published research and commonly reported community protocols only. This is not a personal recommendation. These compounds are not FDA-approved for human use in the contexts described. Consult a qualified healthcare provider before starting any protocol.

Considering stacking?

See the stacking guide for common combinations with AOD-9604 and what to avoid.

Stacking guide

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Community Reviews

Reviews reflect individual user experiences with research compounds and are not medical advice. Results vary. These compounds are not FDA approved for human use. Peptelligent does not verify reported experiences.

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