HGH Fragment 176-191 - Dosing Calculator & Information

Category: Fat Loss

The lipolytic fragment of human growth hormone (amino acids 176-191), targeting fat metabolism without the growth-promoting or diabetogenic effects of full-length HGH.

Dosing Information

Storage Guidelines

Before mixing: Room temperature up to 3 months, refrigerated (2-8°C) up to 2 years. Keep away from light. After mixing: Refrigerate at 2-8°C. Use within 3-4 weeks. Do not freeze.

Frequently Asked Questions

What is HGH Fragment 176-191?

HGH Fragment 176-191 is a modified piece of the human growth hormone molecule, specifically amino acids 176 through 191 from the C-terminal end. Research has shown this small fragment is responsible for HGH's fat-burning effects without causing the growth or blood sugar changes associated with full-length HGH.

How is HGH Frag 176-191 different from HGH?

Full-length HGH has many effects: growth promotion, fat loss, blood sugar elevation, and IGF-1 increase. HGH Frag 176-191 isolates only the fat metabolism portion. Studies show it does not raise IGF-1 or affect blood glucose, making it a more targeted research tool for studying fat loss pathways.

What is the difference between HGH Frag and AOD-9604?

AOD-9604 is essentially HGH Fragment 177-191 with a tyrosine amino acid added to the N-terminus. They share the same mechanism of action. AOD-9604 progressed further in clinical research and reached Phase 2b trials for obesity treatment, while HGH Frag 176-191 remains primarily a research tool.

Why should HGH Fragment 176-191 be taken fasted?

Research suggests the lipolytic effects of HGH Frag 176-191 are most pronounced in a fasted state. Elevated insulin levels (from eating) can inhibit lipolysis, potentially reducing the fragment's fat-mobilizing effects. Most research protocols specify fasted administration for optimal results.

Does HGH Fragment 176-191 affect blood sugar?

No. Unlike full-length HGH which can raise blood sugar and reduce insulin sensitivity, studies show HGH Fragment 176-191 does not affect glucose metabolism. This is one of its primary advantages as a research compound for studying fat loss independently of metabolic disruption.

How should I store reconstituted HGH Frag 176-191?

After reconstitution with bacteriostatic water, store at 2-8°C (standard refrigerator temperature). Use within 3-4 weeks. Do not freeze reconstituted solution. Lyophilized (powder) form can be stored refrigerated for up to 2 years.

Research Summary

HGH Fragment 176-191 is a synthetic peptide corresponding to the C-terminal portion (amino acids 176-191) of human growth hormone. Research published in journals including Endocrinology and Obesity Research has demonstrated that this specific fragment retains the lipolytic (fat-burning) activity of full-length HGH while lacking the growth-promoting and diabetogenic effects. In vitro studies show it stimulates lipolysis and inhibits lipogenesis in adipose tissue. Animal studies have demonstrated significant reductions in body fat without changes in IGF-1 levels, blood glucose, or insulin sensitivity — a key advantage over exogenous HGH. The fragment works by mimicking the way natural growth hormone regulates fat metabolism, specifically through beta-3 adrenergic receptor pathways. AOD-9604, a closely related peptide with an additional tyrosine residue, reached Phase 2b clinical trials for obesity. HGH Frag 176-191 remains an active area of research for targeted fat reduction without systemic growth hormone effects.

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