How does HGH Fragment 176-191 work?
Same as AOD-9604 mechanistically, the HGH fragment isolated to retain lipolysis without IGF-1 stimulation. Sometimes used interchangeably with AOD-9604. In plain terms, HGH Fragment 176-191 is the fat-loss tail of the HGH molecule, isolated and used alone. Goal: trigger lipolysis without GH's water retention or insulin impact. Mechanistic detail like this comes largely from preclinical and early research, the human picture is limited.
What people use it for
- Users wanting GH-style fat-loss signal without the bulky side effects
- Cuts where GH-axis stacks would be too aggressive
References
- The effects of human GH and its lipolytic fragment (AOD9604) on lipid metabolism following chronic treatment in obese mice and beta(3)-AR knock-out mice — Heffernan M, Summers RJ, Thorburn A, et al., Endocrinology, 2001
- Metabolic studies of a synthetic lipolytic domain (AOD9604) of human growth hormone — Ng FM, Sun J, Sharma L, et al., Hormone Research, 2000
Pepdex is an editorial reference, not medical advice. Peptides vary in legal and approval status by country, many are research compounds without full human safety data. Talk to a qualified clinician before starting anything.
More on HGH Fragment 176-191
Last updated 2026-06-06.