Peptide Library

PT-141 is a synthetic melanocortin receptor agonist primarily used for treating sexual dysfunction in both men and women. Unlike PDE5 inhibitors (Viagra/Cialis), it works centrally in the brain to increase sexual desire and arousal through melanocortin pathways rather than vascular mechanisms.

Melanotan 2 is a synthetic analog of alpha-melanocyte stimulating hormone (α-MSH) that stimulates melanogenesis, the production of melanin in the skin. Originally developed as a sunless tanning agent and potential skin cancer preventative, it also has aphrodisiac effects through melanocortin receptor activation.

DSIP is a naturally occurring nonapeptide that was first isolated from rabbit cerebral venous blood during slow-wave sleep. It acts as a neuromodulator and has been shown to increase sleep efficiency, reduce sleep latency, and provide neuroprotective effects through antioxidant mechanisms.

Kisspeptin is a hypothalamic neuropeptide that plays a critical role in regulating the reproductive axis by stimulating GnRH release. It is essential for puberty onset, fertility, and menstrual cycle regulation.

NAD+ is a critical coenzyme found in all living cells that plays essential roles in cellular energy metabolism, DNA repair, and signaling pathways. NAD+ levels decline with age.

SS-31 is a mitochondria-targeted tetrapeptide that binds to cardiolipin in the inner mitochondrial membrane. It improves mitochondrial function and reduces oxidative stress.

Dihexa is a synthetic peptide derived from angiotensin IV that was developed at Washington State University. It is a potent hepatocyte growth factor (HGF) activator and has shown remarkable cognitive enhancement in animal models of Alzheimer's disease.

GW-501516 is a PPARδ agonist originally developed for metabolic and cardiovascular diseases. It dramatically increases endurance by shifting muscle metabolism toward fatty acid oxidation. Note: This is technically not a peptide but a PPAR agonist compound.

MK-677 is an orally active growth hormone secretagogue that mimics the action of ghrelin. It stimulates the release of growth hormone and IGF-1 without affecting cortisol levels. Note: This is a small molecule, not technically a peptide.

Hexarelin is a synthetic growth hormone-releasing peptide (GHRP) that stimulates the release of growth hormone from the pituitary gland. It is more potent than GHRP-2 and GHRP-6 and does not significantly increase appetite.

GHRP-2 is a synthetic growth hormone-releasing peptide that stimulates GH release from the pituitary. It is more selective than GHRP-6 with less appetite stimulation and is widely used in research and clinical settings.

GHRP-6 is a first-generation growth hormone-releasing peptide that stimulates GH release and significantly increases appetite. It is the most hunger-inducing of the GHRP family.

BPC-157 is a synthetic pentadecapeptide derived from a protective protein found in human gastric juice. Research has investigated its potential effects on tissue healing, angiogenesis, and cellular repair mechanisms.

TB-500 is the synthetic version of Thymosin Beta-4, a naturally occurring peptide present in virtually all human and animal cells. Research has focused on its role in actin regulation and tissue regeneration.

Thymosin Alpha-1 is a peptide fragment derived from prothymosin alpha. It has been studied for its immunomodulatory properties and effects on T-cell function.

MOTS-c is a mitochondrial-derived peptide encoded by mitochondrial DNA. Research has investigated its role in metabolic regulation, insulin sensitivity, and exercise adaptation.

AOD-9604 is a modified fragment of human growth hormone (hGH) amino acids 176-191. Research has examined its potential effects on fat metabolism without impacting blood sugar or growth.

GHK-Cu is a naturally occurring copper complex of the tripeptide glycyl-L-histidyl-L-lysine. It has been extensively studied for tissue repair, skin regeneration, and anti-aging effects.

Semax is a synthetic peptide derived from adrenocorticotropic hormone (ACTH). Research has focused on its potential neuroprotective and cognitive-enhancing properties.

Selank is a synthetic peptide derived from tuftsin. It has been studied for its potential anxiolytic and nootropic effects, particularly in stress and anxiety models.

CJC-1295 is a synthetic analog of growth hormone-releasing hormone (GHRH). The DAC (Drug Affinity Complex) version extends its half-life. Research has examined its effects on growth hormone secretion.

Ipamorelin is a growth hormone secretagogue that selectively stimulates the pituitary gland to release growth hormone. It is one of the most selective GHRPs studied.

Retatrutide is a triple hormone receptor agonist (GCGR/GIPR/GLP-1R) developed for obesity and metabolic disorders. It represents a new class of metabolic peptides.

5-Amino-1MQ is a small molecule that inhibits NNMT (Nicotinamide N-methyltransferase). Research has investigated its potential effects on metabolism and fat loss.

Semaglutide is a GLP-1 receptor agonist that mimics the hormone glucagon-like peptide-1. It has been extensively studied for type 2 diabetes and obesity, showing significant effects on weight loss and glycemic control.

Tirzepatide is a dual GIP and GLP-1 receptor agonist. It represents a new class of medications for diabetes and obesity, showing superior weight loss compared to GLP-1 agonists alone.

Tesamorelin is a growth hormone-releasing hormone (GHRH) analog that stimulates endogenous growth hormone production. It is FDA-approved for HIV-associated lipodystrophy and has been studied for reducing visceral adipose tissue.

Sermorelin is a synthetic peptide corresponding to the first 29 amino acids of growth hormone-releasing hormone. It stimulates the pituitary gland to produce and release growth hormone.

Epitalon is a synthetic tetrapeptide that mimics the natural pineal gland peptide epithalamin. Research has focused on its potential effects on telomerase activity, cellular aging, and circadian rhythm regulation.

LL-37 is the only known human cathelicidin antimicrobial peptide. It plays a crucial role in innate immunity and has been studied for its antimicrobial, immunomodulatory, and wound healing properties.

Thymalin is a polypeptide complex isolated from the thymus gland that regulates immune function and T-cell differentiation. It contains short peptides EW, KE, and EDP that stimulate thymic function.

P21 is a synthetic neurotrophic peptide derived from CNTF (ciliary neurotrophic factor) that promotes neurogenesis and cognitive enhancement. It was developed specifically to improve learning and memory.

Cerebrolysin is a porcine brain-derived peptide preparation containing low-molecular-weight neuropeptides and amino acids. It crosses the blood-brain barrier and mimics endogenous neurotrophic factors.

Epithalon is a synthetic tetrapeptide that mimics a naturally occurring substance from the pineal gland. It activates telomerase and may extend telomeres, potentially increasing cellular lifespan.

KPV is a tripeptide fragment of alpha-MSH that has potent anti-inflammatory properties. It is being researched for inflammatory bowel disease, skin conditions, and immune modulation.

Wolverine is a proprietary blend of Thymosin Alpha-1, BPC-157, and TB-500 designed for comprehensive tissue repair and immune support. It combines the benefits of three synergistic peptides.

KLOW is a cosmetic peptide blend gaining popularity in the peptide community for skin and hair health. Based on anecdotal reports from users combining it with weight loss protocols, it is being explored for its potential effects on skin elasticity, hair growth, and cosmetic appearance during body recomposition.

This combination pairs CJC-1295 (a GHRH analog) with Ipamorelin (a selective GHRP) to create a synergistic effect on growth hormone release. CJC-1295 provides sustained GHRH signaling while Ipamorelin triggers pulsatile GH release.

Oxytocin is a naturally occurring neuropeptide produced in the hypothalamus. Known as the "love hormone" or "bonding hormone," it is being studied for social anxiety, autism spectrum disorders, PTSD, and metabolic regulation.

Noopept is a synthetic nootropic dipeptide developed in Russia. It is prescribed there for cognitive impairment and is 1000x more potent than piracetam by weight.

ARA-290 is a non-erythropoietic peptide derived from erythropoietin. It acts on the Innate Repair Receptor (IRR) to provide tissue protection and pain relief without stimulating red blood cell production.

VIP is a 28-amino acid neuropeptide with wide-ranging effects on immune function, circulation, and brain health. Used in research for mold illness (CIRS), autoimmune conditions, and neuroprotection.

Humanin is a 24-amino acid mitochondrial-derived peptide (MDP) that plays a protective role against Alzheimer's disease and cellular stress. It represents a new class of mitochondria-signaling molecules.

FOXO4-DRI is a senolytic peptide designed to selectively eliminate senescent cells. It disrupts the interaction between FOXO4 and p53, allowing p53 to trigger apoptosis in aged, damaged cells.

Setmelanotide is an FDA-approved melanocortin-4 receptor (MC4R) agonist for rare genetic obesity disorders. It is the first treatment specifically targeting the MC4R pathway.

Liraglutide is an FDA-approved GLP-1 receptor agonist used for type 2 diabetes (Victoza) and obesity (Saxenda). It is a long-acting analog of human GLP-1 with 97% homology.

IGF-1 is a hormone similar in structure to insulin that plays a critical role in growth and development. It is produced primarily in the liver in response to growth hormone.

Gonadorelin is the synthetic form of gonadotropin-releasing hormone (GnRH), produced in the hypothalamus. It stimulates the pituitary to release LH and FSH, regulating reproductive function.

Triptorelin is a GnRH agonist used in the treatment of prostate cancer, endometriosis, and precocious puberty. It initially stimulates then suppresses gonadotropin release through receptor downregulation.

Thymulin is a nonapeptide hormone produced by thymic epithelial cells. It requires zinc for biological activity and plays a crucial role in T-cell differentiation and immune regulation.

PE-22-28 is a synthetic peptide derived from the neuroprotective drug tianeptine. It represents the active pharmacophore responsible for tianeptine's neuroplasticity-enhancing effects.

Snap-8 is a synthetic octapeptide designed as a topical alternative to Botox. It reduces the depth of wrinkles by inhibiting muscle contraction.

Argireline is a synthetic hexapeptide that mimics the N-terminal end of SNAP-25. It is one of the most popular anti-wrinkle peptides in cosmetics.

Matrixyl is a synthetic lipopeptide designed to stimulate collagen production and reduce wrinkles. It is one of the most researched anti-aging peptides in cosmetics.

MGF is a splice variant of IGF-1 produced locally in muscle in response to mechanical stress/exercise. It triggers muscle stem cell activation and hypertrophy.

TB4-FRAG is the active fragment of Thymosin Beta-4 (TB-500). This 4-amino acid fragment retains many of the regenerative properties of full-length TB-500.