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MetabolicPreliminary grade

HGH Fragment 176-191

AOD parent fragment

The C-terminal GH fragment behind AOD-9604 — lipolytic in animal models, very thin human evidence.

Verdict — D · Speculative

Plausible lipolytic mechanism in animals, but thin human evidence and no clinical development program. Moderate gray-market availability and a reasonable safety profile don't compensate for the weak evidence base. D-grade.

Overview

HGH Fragment 176-191 is a synthetic peptide corresponding to the C-terminal region of human growth hormone, proposed to retain the lipolytic activity of native GH without IGF-1-mediated growth effects. Most supporting data are from rodent studies or in-vitro; human evidence is sparse and largely anecdotal. It is the parent peptide of AOD-9604, which underwent a formal failed phase-2b obesity trial.

PepScore Breakdown — the four axes

Evidence

35% weight
27/100

How strong is the published human science?

Human data depth8/40
Regulatory & registry status5/30
Reproducibility & consistency8/20
Mechanism characterized in humans6/10

Sourcing & COA

30% weightOur moat
47/100

Can a buyer obtain an independently-verified, high-purity version? — our proprietary layer.

Independent 3rd-party testing16/35
Verified purity %14/30
COA transparency & batch traceability9/20
Multi-vendor verified availability8/15

Safety & Risk

25% weight
71/100

What is the real-world harm potential?

Documented AEs / toxicity30/40
Contraindication breadth17/25
Regulatory warnings13/20
Therapeutic index / margin11/15

Practicality

10% weight
63/100

How easy is it to actually run a verified version?

Verified-source availability20/35
Cost / value per cycle16/25
Reconstitution & administration18/25
Storage & stability9/15

Sources & Citations

Every claim cites a primary source. Citations are machine-audited against NCBI — see methodology.

PepScore48/100 · D
Last gradedJune 28, 2026
Next re-grade triggerA registered human efficacy trial would be the primary mover.

Educational only — not medical advice. PepScore is an educational research grade, not a prescription or dosing recommendation. Some vendor links are affiliate links — this never affects grades. Consult a licensed healthcare provider before using any compound.