99%+ Purity
COA Included
Sealed Vials
HGH 191 Frag
Human Growth Hormone for muscle, fat loss, and recovery
Muscle, fat loss, recovery
Key Benefits
- May support lean muscle development
- Research suggests enhanced fat metabolism
- Potential improvement in recovery processes
- May promote protein synthesis pathways
- Supports natural IGF-1 production
- Bioidentical 191-amino acid sequence
- Activates cellular repair mechanisms
Want to purchase this peptide?
Build the Body You Want While You Sleep
Most people hit a wall where diet and training stop moving the needle—fat stops coming off, muscle stops coming on, and recovery feels like it's working against you. HGH 191 Fragment works with your body's own overnight repair cycle to change that dynamic. The result is a leaner physique, faster bounce-back between sessions, and the kind of body composition shift that feels like your metabolism finally woke up.
GH receptor / JAK2-STAT5 signaling → IGF-1 production, lipolysis via HSL activation, and skeletal muscle protein synthesis
About HGH 191 Frag
HGH 191 is a bioidentical 191-amino acid somatropin that mirrors the growth hormone your body produces naturally, amplifying the signals responsible for fat breakdown, lean tissue development, and cellular recovery. It works by binding to growth hormone receptors across muscle, liver, and adipose tissue, triggering a cascade that shifts your body toward burning fat for fuel and repairing muscle at an accelerated rate. The result is a compound that addresses body composition from multiple angles simultaneously, without requiring you to choose between fat loss and muscle preservation.
Who It's For
This is the compound for people who are serious about long-term physique and performance goals—those who want to optimize body composition without sacrificing recovery or metabolic health. It fits naturally into structured protocols where sustained lean mass, reduced body fat, and resilience between training cycles are the priority. Whether used as a foundation or alongside complementary peptides, HGH 191 supports the kind of consistent, compounding progress that separates long-term results from short-term fixes.
Research Background
Human growth hormone represents one of the most extensively studied peptide hormones, with research spanning over five decades since its initial isolation and characterization. The growth hormone-IGF-1 axis serves as the primary regulatory system for post-natal growth, metabolism, and tissue repair. Key research areas include: 1) Metabolic regulation - investigating GH's role in glucose homeostasis, lipid metabolism, and body composition changes, 2) Anabolic signaling - understanding how GH promotes protein synthesis and muscle growth through IGF-1 mediated pathways, and 3) Clinical applications - developing therapeutic protocols for growth disorders, age-related changes, and metabolic diseases. Recent research has focused on optimizing treatment protocols to maximize benefits while minimizing side effects such as insulin resistance and fluid retention. The hormone's complex interplay with other endocrine systems, including insulin, cortisol, and thyroid hormones, continues to be an active area of investigation, particularly regarding its potential applications in age-related muscle wasting and metabolic dysfunction.
Dosing Protocol
| Level | Dose | |
|---|---|---|
Beginner | 1-2 IU | |
Intermediate | 2-3 IU | |
Advanced | 3-5 IU | |
Maximum | 8-10 IU |
Select a dosing level and click Calculate to plan your protocol.
Vials Required
15
150.0 IU needed ÷ 10 per vial
Total Investment
$938
$62.50 per vial
Per Dose
0.50 mL
50 units on U-100 syringe
Doses per Vial
4
10 ÷ 2.50 IU/dose
* Calculations based on standard reconstitution protocols. Consult research guidelines for specific applications.
Educational Resources
Download educational materials and research documentation for HGH 191 Frag.
HGH (Somatropin 191aa) Cheat Sheet
Dosing protocols, reconstitution & storage guide
Featured in These Stacks
ALPHA MALE RECOMP
MALE RECOMP TRT +
Alpha Male ReComp is a structured optimization framework built around sequence, not stacking. It assumes a TRT foundation and then removes the primary physiological bottlenecks in the order they limit performance. The first priority is restoring metabolic flexibility. MOTS-C, SS-31, 5-Amino-1Q, and SLU-PP-332 improve mitochondrial efficiency, AMPK signaling, and insulin sensitivity. This unlocks fat access and stabilizes energy. Without this layer, growth hormone signaling and fat-loss tools underperform. Next, adiposity is targeted directly. Retatrutide enhances satiety and insulin regulation while increasing fat oxidation. HGH Frag 176-191 drives lipolysis without full GH spillover. Continuing MOTS-C preserves metabolic efficiency during caloric reduction. This phase produces measurable waist reduction and accelerated recomposition. Once insulin is controlled and fat mobilization is active, the GH axis becomes effective. Tesamorelin and Ipamorelin restore pulsatile GH signaling and specifically target visceral fat. In this environment, GH supports lean mass retention, deeper sleep, and improved recovery rather than marginal cosmetic change. As training intensity rises, structural durability becomes the constraint. The KLOW stack — BPC-157, TB-500, KPV, and GHK-Cu — reinforces connective tissue integrity, reduces inflammatory drag, and supports collagen remodeling. This enables sustainable progression instead of cyclical injury. Finally, longevity is layered on top of stability. Epithalon supports circadian rhythm regulation, sleep architecture, and long-term cellular resilience. It amplifies an optimized system rather than compensating for dysfunction.
Includes
Compliance & Disclaimer
This product is intended for laboratory research purposes only. Not for human consumption. All products are sold with the understanding that the purchaser will comply with all applicable local, state, and federal laws regarding the purchase and use of research chemicals. Certificate of Analysis available upon request.
Related Products
CJC-1295 (DAC)
Long-acting GHRH analog for sustained GH elevation
CJC-1295 (No DAC)
GHRH analog for pulsatile GH release
CJC-1295 / Ipamorelin
CJC-1295 and Ipamorelin are designed for clients who want measurable performance, recovery, and longevity benefits—without crossing the line into hormone replacement or system shutdown. This is not synthetic HGH and it’s not a short-term hack. It’s a disciplined, physiology-first approach that restores the body’s own growth hormone signaling, which naturally declines with age, stress, poor sleep, and overtraining. CJC-1295 works upstream at the pituitary level, enhancing the quality, duration, and consistency of natural GH release, while Ipamorelin acts as a precision trigger—stimulating GH without the cortisol spikes, prolactin elevation, or hunger issues associated with older compounds. Together, they create smoother, more youthful GH pulses that the body actually knows how to use. From a client experience standpoint, this shows up where it matters: deeper, more restorative sleep; faster recovery between workouts or long workdays; improved fat metabolism; better skin and tissue quality; and a noticeable improvement in overall resilience. There’s no suppression of natural production, no dependency risk, and no hormonal rollercoaster—making it appropriate for long-term use and scalable protocols. For many clients, this stack becomes the foundation layer they build everything else on, because it improves how the body repairs, adapts, and recovers across the board. In short, this is growth hormone optimization for adults who play the long game—subtle, sustainable, and designed to deliver compounding returns over time.