Peptide library · Weight & metabolism
AOD-9604
hGH fragment 176-191
Research stage16amino acids, from the fat burning end of human growth hormone
What it is
A modified piece of growth hormone designed to keep its fat metabolism effects without its growth effects.
Why researchers are interested
- Animal studies showed increased fat breakdown and reduced fat storage.
- Went through human trials with a clean safety record.
- Doesn't raise IGF-1, unlike full growth hormone.
Good to know
- The human obesity trial didn't beat placebo, so development stopped.
- Not FDA approved.
Evidence level: 2 of 5
Sources
Heffernan et al., Endocrinology 2001; Metabolic Pharmaceuticals trial reports
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Educational content only. Not medical advice. Last reviewed 2026-10-17.