How It Works
Fragment 176-191 is a stabilized peptide fragment from the C-terminal region of growth hormone. It stimulates lipolysis (fat breakdown) by activating hormone-sensitive lipase in adipocytes and inhibits lipogenesis (new fat formation). Unlike full HGH, it does not compete for HGH receptors and does not affect IGF-1 levels or blood glucose.
Reconstitution Guide
Follow these steps to properly reconstitute Fragment 176-191 (HGH Frag) for research use:
- Step 1: Swab the tops of both the peptide vial and bacteriostatic water vial with alcohol.
- Step 2: Draw your desired amount of BAC water (commonly 1–2 mL) into an insulin syringe.
- Step 3: Inject the water slowly into the peptide vial, aiming at the glass wall — not directly onto the powder.
- Step 4: Swirl the vial gently until fully dissolved — never shake.
- Step 5: Refrigerate at 36–46°F (2–8°C). Use within 4–6 weeks.
Use the dosing calculator to calculate your exact concentration (mcg per unit) and how many units to draw on your syringe.
Frequently Asked Questions
How does Fragment 176-191 (HGH Frag) work? ▾
Fragment 176-191 is a stabilized peptide fragment from the C-terminal region of growth hormone. It stimulates lipolysis (fat breakdown) by activating hormone-sensitive lipase in adipocytes and inhibits lipogenesis (new fat formation). Unlike full HGH, it does not compete for HGH receptors and does not affect IGF-1 levels or blood glucose.
What are the key research findings? ▾
- 12.5x more potent for fat loss than full-length HGH in studies
- Does not affect blood sugar levels or promote insulin resistance
- Specific to fat metabolism without anabolic effects on other tissues
- May support cartilage regeneration in addition to fat loss
What is the typical dosing protocol? ▾
250–500 mcg administered subcutaneously 1–2 times daily on an empty stomach. Best administered in the morning fasted or before exercise. Cycles run 8–12 weeks. Often combined with AOD 9604 or CJC-1295/Ipamorelin for enhanced body composition results.
How should Fragment 176-191 (HGH Frag) be stored? ▾
Unreconstituted powder should be stored in a freezer or refrigerator away from light and moisture. Once reconstituted with bacteriostatic water, refrigerate at 36–46°F (2–8°C) and use within 4–6 weeks. Never freeze reconstituted peptides.