The Peptide
Encyclopedia

A 15-amino acid peptide derived from human gastric juice, extensively studied for its regenerative and protective properties across multiple tissue types.

A naturally occurring copper-binding tripeptide with powerful regenerative, anti-aging, and wound-healing properties backed by decades of research.

A next-generation triple agonist targeting GLP-1, GIP, and glucagon receptors, showing unprecedented weight loss results in clinical trials.

A dual GLP-1/GIP receptor agonist developed by Eli Lilly, FDA-approved for both Type 2 diabetes (Mounjaro) and obesity (Zepbound), showing up to 22.5% weight loss in trials.

The GLP-1 receptor agonist that started the weight loss drug revolution, FDA-approved as Ozempic (diabetes) and Wegovy (obesity), with proven cardiovascular benefits.

A synthetic version of a naturally occurring 43-amino acid peptide (Thymosin Beta-4) known for promoting cell migration, wound healing, and tissue repair.

An FDA-approved growth hormone-releasing hormone (GHRH) analog that stimulates natural GH production, primarily used for reducing visceral fat and improving body composition.

A modified fragment of human growth hormone (amino acids 176-191) developed specifically for fat loss without the metabolic side effects of full HGH.

A 16-amino-acid mitochondrial-derived peptide studied for metabolic signaling, exercise responses and healthy aging, with encouraging animal findings and developing human research.

A synthetic growth hormone-releasing hormone (GHRH) analog that stimulates the anterior pituitary to produce and release natural growth hormone, supporting muscle growth, fat loss, and anti-aging benefits.

A selective ghrelin receptor agonist that stimulates growth hormone secretion with minimal impact on cortisol or prolactin levels, offering a selective approach to GH optimization without some side effects of other secretagogues.

A long-acting growth hormone-releasing hormone (GHRH) analog with extended half-life through DAC (Drug Affinity Complex) modification, providing sustained pituitary stimulation for continuous growth hormone elevation.

A melanocortin agonist peptide that stimulates sexual arousal and desire in both men and women, originally developed for sexual dysfunction treatment with benefits for libido, erectile function, and overall sexual wellness.

Epithalon (Epitalon) is a four-amino-acid peptide studied for telomere biology, circadian signaling and aging. Cell and animal findings are promising; small human studies address specific biomarkers or retinal disease rather than demonstrating longer human lifespan.

An immune-modulating peptide extracted from thymic tissue that enhances T-cell development, immune function, and recovery by supporting thymic hormone production and optimizing immune surveillance.

A neuropeptide that stimulates GnRH and LH secretion, promoting testosterone and growth hormone production while supporting reproductive health, fertility, and sexual function through central endocrine regulation.

KPV is a potent anti-inflammatory tripeptide derived from alpha-melanocyte-stimulating hormone (α-MSH). It modulates immune responses through melanocortin receptors and NF-κB pathway inhibition, making it valuable for gut health, skin healing, and systemic inflammation reduction.

5-Amino-1MQ is a potent small molecule NNMT (nicotinamide N-methyltransferase) inhibitor that promotes fat cell metabolism and weight loss. While technically not a peptide, it's commonly grouped with peptide therapeutics due to similar applications in metabolic optimization and body composition improvement.

Dihexa is a cognitive-enhancing peptide derived from angiotensin IV that promotes synaptogenesis and enhances cognitive function. Developed at Washington State University, it activates the hepatocyte growth factor (HGF) and c-Met receptor pathway, potentially supporting memory, learning, and neuroprotection.

Selank is a synthetic, tuftsin-derived peptide with encouraging anxiety findings from small human studies. Researchers are also studying cognition, stress responses and immune signaling, with evidence ranging from clinical reports to animal and laboratory work.

Semax is a synthetic peptide being studied for attention, memory and recovery after stroke. Small human studies report encouraging performance and rehabilitation findings, while animal research explores its effects on BDNF-related signaling.

Cerebrolysin is a porcine-derived peptide mixture studied in stroke recovery, traumatic brain injury and dementia. Some trials report encouraging recovery or cognitive findings, but results differ by condition and outcome.

DSIP is a nine-amino-acid peptide investigated for sleep and stress-related effects. Small human studies include encouraging sleep findings and limited or neutral results; the evidence does not establish a standard sleep-treatment regimen.

SS-31 (elamipretide) is a cardiolipin-binding peptide studied for mitochondrial disorders and aging-related dysfunction. Its Forzinity formulation has a specific Barth syndrome indication; broader human studies have produced mixed results alongside encouraging experimental findings.

Snap-8 (Acetyl Octapeptide-3) is a topical anti-wrinkle peptide that inhibits SNARE complex function, reducing facial muscle contractions that cause wrinkles. The peptide offers Botox-like anti-aging benefits without injections, making it ideal for topical skincare applications.

Noopept (GVS-111) is a potent nootropic peptide that enhances cognitive function through NGF and BDNF stimulation, improving memory, learning, focus, and neuroprotection. The peptide offers cognitive enhancement superior to racetams with faster onset and lower dosages.

Melanotan II is a synthetic melanocortin receptor agonist peptide that stimulates melanin production and darkens skin without sun exposure. The peptide offers tanning benefits with potential side effects that require careful consideration.

LL-37 is the active human cathelicidin antimicrobial peptide that provides direct pathogen killing, immune system modulation, and wound healing support. The peptide enhances innate immune defenses and promotes tissue regeneration through multiple mechanisms.

Humanin is a 24-amino acid mitochondrial-derived peptide that provides neuroprotection, supports metabolic health, and promotes longevity through multiple mechanisms. The peptide protects against age-related diseases and supports healthy aging.

Gonadorelin is a GnRH analog peptide that stimulates testosterone production through natural pituitary-gonadal axis signaling. The peptide offers an alternative to exogenous testosterone for male hormonal optimization, fertility support, and TRT supplementation.

A potent growth hormone secretagogue that stimulates natural GH production through ghrelin receptor activation.

A potent GH secretagogue similar to GHRP-6 but with reduced appetite stimulation, offering selective growth hormone elevation.

A potent hexapeptide growth hormone secretagogue with faster onset than GHRP variants, designed for maximum GH stimulation.

A myostatin inhibitor peptide that blocks myostatin's negative regulation of muscle growth, enabling rapid and substantial muscle development.

A modified insulin-like growth factor variant with extended half-life and enhanced anabolic properties for comprehensive muscle and tissue growth.

A naturally-produced muscle growth factor derived from IGF-1 that is upregulated by mechanical stress, enhancing muscle repair and hypertrophy.

A naturally-produced nonapeptide hormone affecting social bonding, stress response, and physical well-being with applications in therapy and wellness.

A GLP-1 receptor agonist peptide (Saxenda/Victoza) that enhances satiety, reduces appetite, and supports sustainable weight loss.

A long-acting GLP-1 receptor agonist (Trulicity) with once-weekly dosing for weight loss and metabolic health support.

A GLP-1 receptor agonist (Byetta/Bydureon) with rapid onset for appetite control and sustainable weight loss management.

A synthetic tripeptide nootropic that supports brain health, cognitive function, and neurological wellness through pineal gland support.

Vasoactive intestinal peptide with neuroimmunomodulatory effects supporting respiratory health, inflammation control, and overall wellness.

An oral growth hormone secretagogue that stimulates GH and IGF-1 production without affecting cortisol levels, used extensively in research for muscle growth and recovery.

A dual GLP-1/glucagon agonist developed by Innovent Biologics for weight loss and metabolic improvement, combining appetite suppression with increased energy expenditure.

Boehringer Ingelheim's dual GLP-1/glucagon agonist in clinical development for weight loss, combining appetite suppression with increased energy expenditure.

Eli Lilly's oral non-peptide GLP-1 agonist offering convenient daily oral dosing for weight loss, providing an alternative to weekly injectable GLP-1 therapies.

Altimmune's GLP-1/glucagon dual agonist peptide for weight loss and metabolic improvement, combining appetite suppression with increased energy expenditure.

A modified growth hormone releasing hormone (GHRH) with Drug Affinity Complex modification, providing long-acting GH stimulation via subcutaneous injection.

A naturally occurring thymic peptide hormone that regulates immune system development and function, studied for immune modulation and aging-related immune decline.

A senolytic peptide that selectively targets and eliminates senescent cells, potentially reversing aging at the cellular level.

A semi-synthetic polysaccharide derived from beechwood that supports joint health, cartilage repair, and reduces inflammation for recovery and injury healing.

An innate repair receptor (IRR) agonist peptide that activates cellular repair mechanisms, showing promise for neuropathic pain, tissue healing, and recovery.

Bioavailable collagen fragments derived from animal collagen protein, supporting skin health, joint function, gut integrity, and connective tissue quality.

A cosmetic peptide that stimulates collagen synthesis when applied topically, reducing wrinkles and improving skin firmness without injections.

A cosmetic peptide that mimics Botox-like effects by reducing facial muscle contractions, reducing wrinkles and expression lines topically without injections.