CJC-1295
Limited human data
A growth hormone-releasing hormone (GHRH) analogue discussed for GH-axis support. Often mentioned with ipamorelin in fitness forums as a commonly discussed pairing.
Muscle / GH axis · Recovery · Sleep / recovery adjunct
Compound library
Peptides
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45 compounds catalogued
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Showing 11 peptides tagged Muscle / GH axis.
Ipamorelin
Limited human data
A selective growth hormone secretagogue (ghrelin-receptor agonist) discussed for GH pulses with a relatively favorable selectivity profile in older literature.
Muscle / GH axis · Recovery · Sleep / recovery adjunct
Sermorelin
Limited human data
A 29-amino-acid fragment of growth hormone-releasing hormone (GHRH) that stimulates the pituitary to release the body's own growth hormone. Once an FDA-approved drug for pediatric growth hormone deficiency, it is now mostly used off-label and compounded for adult anti-aging and GH-optimization protocols.
Muscle / GH axis · Longevity / aging
Tesamorelin
Stronger clinical signal
A synthetic GHRH analogue with an approved indication for reducing excess abdominal fat in specific HIV-associated lipodystrophy contexts, often referenced when discussing visceral fat and GH axis research.
Fat loss · Muscle / GH axis · Metabolic
Hexarelin
Limited human data
A synthetic hexapeptide growth hormone secretagogue that activates the ghrelin receptor, producing one of the strongest GH releases of any peptide in its class. Distinct among GH secretagogues for a separate, GH-independent cardioprotective effect documented in animal models.
Muscle / GH axis · Recovery
GHRP-2
Limited human data
A synthetic hexapeptide ghrelin receptor agonist that stimulates growth hormone release. Notable for being the one compound in this family with a real regulatory approval, marketed in Japan as a diagnostic agent for GH deficiency under the name pralmorelin.
Muscle / GH axis · Recovery
GHRP-6
Limited human data
The original growth hormone-releasing hexapeptide, discovered in 1984 and the founding compound of the entire GHRP family, including GHRP-2 and hexarelin. Known for producing the strongest appetite stimulation of the group alongside its GH-releasing effect.
Muscle / GH axis · Recovery
IGF-1 LR3
Emerging
An engineered analog of insulin-like growth factor 1 with reduced binding to its natural binding proteins, giving it a longer half-life and greater potency than native IGF-1. Studied in animals as a research tool for IGF-1 receptor biology, not developed or tested as a human therapeutic.
Muscle / GH axis
Follistatin-344
Emerging
A naturally occurring protein that neutralizes myostatin and related growth-inhibiting signals, allowing muscle to grow beyond its normal ceiling. The systemically circulating isoform used in early-phase gene therapy trials for muscular dystrophy, now also sold as a standalone research peptide with no human data in that injectable form.
Muscle / GH axis · Recovery
MGF (Mechano Growth Factor)
Emerging
A splice variant of IGF-1 that muscle tissue produces locally in response to mechanical stretch, stimulation, or injury. Studied mainly in animal and cell models of muscle repair and regeneration; sold as a synthetic research peptide despite very limited direct human data.
Muscle / GH axis · Recovery
PEG-MGF
Emerging
A polyethylene glycol-modified version of MGF designed to extend the parent peptide's minutes-long half-life to several days. A research-chemical product built on real underlying biology, but with essentially no dedicated studies of its own, pegylated form.
Muscle / GH axis · Recovery