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Part of the pillar guide: Peptide Therapy — Complete Guide

kindr
HGH Fragment 176-191 · Fat Metabolism

The fat-burning fragment of HGH — without the insulin effects.

AOD-9604 is a modified fragment of human growth hormone — specifically the region responsible for fat metabolism. Studied for its ability to stimulate lipolysis and inhibit lipogenesis without the blood sugar and IGF-1 effects associated with full HGH administration.

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AOD-9604 evidence is primarily preclinical. Human trial data is limited. Physician evaluation required and prescription not guaranteed.
Fragment
Amino acids 176-191 of the HGH C-terminus — the fat-metabolizing region
No IGF-1
Does not raise IGF-1 levels — a key differentiator from full HGH
Preclinical
Evidence base — animal studies and early human research

The science behind AOD-9604.

Preclinical disclaimer: The evidence base for AOD-9604 is primarily animal studies and limited human data. Injectable compounded AOD-9604 has not undergone the same clinical trial evaluation as FDA-approved medications. Individual results may vary and physician evaluation is required.

AOD-9604 (Anti-Obesity Drug 9604) was originally developed by Monash University in Australia as a potential obesity treatment. It consists of amino acids 176-191 of the human growth hormone C-terminal region — the specific segment identified as responsible for HGH's fat-metabolizing effects. The hypothesis: isolate the fat-burning properties of HGH without the metabolic side effects.

In animal studies AOD-9604 stimulates lipolysis (breakdown of stored fat) and inhibits lipogenesis (new fat formation) through beta-3 adrenergic receptor activity. Critically it does not appear to raise IGF-1 levels or affect blood sugar — the two primary concerns with full HGH administration. This selective fat metabolism profile is the reason for its clinical interest.

Monash University conducted Phase 2 human trials for AOD-9604 as an oral obesity treatment. The trials showed the compound was safe and well-tolerated but did not demonstrate statistically significant weight loss at the doses studied orally. The injectable form used in current compounding practice has not been evaluated in the same way. Clinical evidence remains limited.

Three key properties

No IGF-1 effect
Unlike full HGH which raises IGF-1 (associated with cancer risk concerns at high levels), AOD-9604 does not appear to stimulate IGF-1 production — a significant safety distinction.
No glucose effects
Full HGH can cause insulin resistance. AOD-9604 does not appear to affect insulin sensitivity or blood glucose — making it potentially suitable for a broader patient population.
Targeted lipolysis
Animal research shows AOD-9604 preferentially targets visceral fat — the metabolically active abdominal fat most associated with metabolic risk — though human data for this specificity is limited.

AOD-9604 alongside GLP-1 therapy.

GLP-1 medications are highly effective for overall weight loss but do not specifically target fat over muscle. AOD-9604 — if the preclinical lipolysis data translates to humans — could theoretically complement GLP-1 therapy by supporting fat-specific metabolism during the weight loss period.

This combination represents an area of clinical interest given the prevalence of GLP-1 users seeking to optimize fat loss while preserving lean mass. Your physician will evaluate whether this combination is appropriate for your specific situation.

Important: The combination of AOD-9604 and GLP-1 medications has not been studied in clinical trials. Your physician will make an individualized determination.

Who benefits most

  • Adults seeking fat metabolism support
  • GLP-1 users wanting additional fat-specific support
  • People with stubborn visceral fat
  • Those concerned about HGH side effects (AOD-9604 avoids them)
  • Women in menopause with abdominal fat accumulation

Contraindications

  • Active malignancy or cancer history
  • Pregnancy or breastfeeding
  • Known hypersensitivity

Side effects (based on available data)

  • Generally well-tolerated
  • Injection site reactions
  • Headache (rare)
  • Flushing (rare)
  • No glucose effects reported
  • No IGF-1 elevation reported

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Frequently asked questions.

AOD-9604 is a modified fragment of human growth hormone — specifically amino acids 176-191 of the HGH C-terminus. It was identified as the region responsible for HGH's fat metabolizing effects and studied as a potential obesity treatment. It does not raise IGF-1 or affect blood sugar — distinguishing it from full HGH.

The fat-metabolizing fragment.
Physician-supervised.

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AOD-9604 is not FDA-approved. Compounded AOD-9604 is not FDA-approved and has not been evaluated by the FDA for safety, efficacy, or quality. Prescription requires physician evaluation and is not guaranteed. Individual results vary. This information is for educational purposes and does not constitute medical advice. kindr Health does not guarantee outcomes. All medications are prescribed by independent licensed physicians through Arora Health & Aesthetics, LLC. Compounded by VialsRX, Houston TX — licensed 503A pharmacy. Services available in all 50 states where permitted by law.
GLP-1 Complete Bundle →Retatrutide →GHK-Cu →Sermorelin →

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Medically reviewed by Dr. Ana Lisa Carr, MD, MBA
Board-Certified Family Medicine Physician · Lead Provider / Medical Reviewer
NPI 1689841744 · Last reviewed: May 10, 2026

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