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Healing & Recovery
Preclinical

Fragment 176-191

Fragment 176-191

Also known as: HGH Fragment 176-191, HGH Frag, GH Frag

Overview

Key Facts

Primary Goal: Research and therapeutic applications of Fragment 176-191

Activates lipolytic pathways in adipose tissue through the C-terminal region of GH. Inhibits de novo lipogenesis to prevent new fat storage.

Dosing Information

Half-Life

15-20 minutes

Typical Dose

250–500 mcg

Frequency

1-2 times daily, fasted

Cycle Length

8-16 weeks

Administration Routes:
subcutaneous

Benefits

  • Targeted fat loss through enhanced lipolysis
  • No impact on blood glucose or insulin sensitivity
  • Does not promote organ or bone growth
  • Does not increase IGF-1 levels

Side Effects

Injection site irritation or rednessmild
Occasional headachemild
Mild lethargymild

Mechanism of Action

1

Activates lipolytic pathways in adipose tissue through the C-terminal region of GH

2

Inhibits de novo lipogenesis to prevent new fat storage

3

Does not interact with the GH receptor in a way that triggers IGF-1 or anabolic signaling

Contraindications

Do not use this peptide if any of the following apply:

  • Active cancer
  • Pregnancy or breastfeeding
  • Eating disorders or severe caloric restriction

Storage & Reconstitution

Unreconstituted (Powder)

Temperature2–8°C (36–46°F) or -20°C (-4°F) for long-term
DurationUp to 3 months

Reconstituted (Mixed)

Temperature2–8°C (36–46°F)
Duration2-4 weeks

Research Summary

Preclinical

HGH Fragment 176-191 was identified through structure-function studies of growth hormone that mapped the lipolytic activity to the C-terminal region. In vitro and animal studies demonstrate it promotes fat oxidation at a rate 12.5 times greater than unmodified GH without affecting carbohydrate metabolism. It is primarily used in research settings focused on obesity and metabolic syndrome.

Frequently Asked Questions

Common questions about Fragment 176-191

UK-Specific Information

Exclusive data points and guidance for UK residents using Fragment 176-191

UK Lab Testing

UK Lab Testing

Recommended labs: Medichecks, Thriva (£89-£149 for peptide safety panel)

Why this matters: UK-specific lab testing guidance not available on US competitor sites

Commonly Stacked With

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