Peptide Catalog

BPC-157 (Body Protection Compound-157) is a synthetic peptide derived from a protein found in gastric juice. It is renowned for its remarkable healing properties across tendons, ligaments, muscles, and the gut lining. Research suggests it promotes angiogenesis and upregulates growth factor receptors to accelerate tissue repair.

KPV is a tripeptide (Lys-Pro-Val) derived from alpha-MSH with potent anti-inflammatory properties. It acts directly on cells to suppress inflammatory cytokine production and has shown promise in treating inflammatory bowel conditions and skin inflammation. Its small size allows for effective oral and topical delivery.

LL-37 is the only known human cathelicidin antimicrobial peptide, playing a crucial role in innate immunity. It has broad-spectrum antimicrobial activity against bacteria, viruses, and fungi, as well as immunomodulatory and wound healing properties. It bridges innate and adaptive immune responses.

⚠ Can cause injection site inflammation. Immunomodulatory effects require careful use in autoimmune conditions.

Thymosin Alpha-1 is a peptide derived from the thymus gland that plays a key role in T-cell maturation and immune regulation. It is used clinically in some countries for hepatitis B/C and as an immune modulator in cancer therapy. In the biohacking space, it is used to strengthen immune response and combat chronic infections.

Kisspeptin-10 is a neuropeptide that acts on GPR54 receptors to stimulate GnRH release, initiating the reproductive hormone cascade. It plays a key role in puberty onset and reproductive function. Research suggests it also modulates limbic system activity related to sexual attraction and social bonding.

Melanotan II is a synthetic analogue of alpha-MSH that binds melanocortin receptors to stimulate melanogenesis (skin tanning), reduce appetite, and increase libido. It produces a natural-looking tan without UV exposure and has potent aphrodisiac effects. Side effects include nausea, facial flushing, and spontaneous erections.

⚠ Can cause nausea and facial flushing. Associated with mole darkening; dermatological monitoring recommended.

Oxytocin is the endogenous 'bonding hormone' released during social connection, touch, and orgasm. Intranasal oxytocin has been studied for enhancing trust, empathy, social bonding, and sexual intimacy. It also has anxiolytic properties and may improve relationship quality.

PT-141 (Bremelanotide) is an FDA-approved melanocortin receptor agonist for hypoactive sexual desire disorder in premenopausal women. Unlike PDE5 inhibitors, it acts centrally in the brain to increase sexual desire rather than peripherally on blood flow. It is effective in both men and women for enhancing libido and sexual function.

⚠ Can cause nausea and transient blood pressure elevation. FDA-approved for women (Vyleesi).

Anastrozole is an aromatase inhibitor (AI) that blocks the conversion of testosterone to estradiol. It is used in TRT protocols to manage elevated estrogen levels that can cause gynecomastia, water retention, and mood issues. Dosing must be carefully calibrated to avoid estrogen crash, which carries its own risks.

⚠ Over-suppression of estradiol causes joint pain, low libido, and cardiovascular risk. Use only when indicated by labs.

Enclomiphene is the active trans-isomer of clomiphene citrate that acts as a selective estrogen receptor modulator (SERM) in the hypothalamus. It blocks estrogen negative feedback, causing the body to increase LH and FSH secretion and thereby stimulate natural testosterone production. It raises testosterone while preserving fertility.

Gonadorelin is a synthetic form of GnRH (Gonadotropin-Releasing Hormone) used to stimulate LH and FSH release from the pituitary. In TRT protocols, it is used as an alternative to HCG to preserve testicular function and fertility. Pulsatile administration is critical as continuous exposure causes receptor desensitization.

⚠ Must be administered in a pulsatile fashion (2-3x weekly). Continuous use causes desensitization and the opposite of intended effect.

Human Chorionic Gonadotropin (HCG) is a hormone that mimics LH (Luteinizing Hormone), stimulating the testes to produce testosterone and maintain testicular function. It is used on TRT to preserve testicular size, intratesticular testosterone, and fertility. It is also used for post-cycle therapy after anabolic steroid use.

⚠ Can raise estradiol; aromatase inhibitor may be needed. Prescription required in most jurisdictions.

Kisspeptin-10 is a neuropeptide that acts on GPR54 receptors to stimulate GnRH release, initiating the reproductive hormone cascade. It plays a key role in puberty onset and reproductive function. Research suggests it also modulates limbic system activity related to sexual attraction and social bonding.

Testosterone Cypionate is a long-acting esterified form of testosterone with a half-life of approximately 8 days, making it suitable for weekly or biweekly injections. It is the most commonly prescribed testosterone ester in the United States for TRT. It provides stable testosterone levels and is the backbone of most TRT protocols.

⚠ Prescription required. Requires monitoring of hematocrit, PSA, and estradiol. Can suppress endogenous testosterone production.

Testosterone Enanthate is a long-acting esterified testosterone with a half-life of approximately 4.5 days, commonly used in TRT and performance contexts. It is the most widely used testosterone ester globally and is interchangeable with cypionate for most purposes. Weekly injections provide stable serum levels.

⚠ Prescription required. Monitor hematocrit, PSA, and estradiol regularly.

5-Amino-1MQ is a small molecule NNMT (Nicotinamide N-Methyltransferase) inhibitor that targets fat cell metabolism. By blocking NNMT, it raises NAD+ levels within fat cells, activating SIRT1 pathways and promoting fat burning. Early research suggests it may reduce fat cell size and support metabolic health.

AOD-9604 is a fragment of HGH (amino acids 177-191) modified with an additional tyrosine group. It was developed to isolate the fat-burning properties of HGH without the growth-promoting or insulin-desensitizing effects. It stimulates lipolysis and inhibits lipogenesis through beta-3 adrenergic receptors.

Cagrilintide is a long-acting amylin analogue in clinical development, often studied in combination with semaglutide (CagriSema). Amylin complements GLP-1 by promoting satiety through distinct central nervous system pathways. The combination approach targets multiple hormonal axes for additive weight loss.

⚠ Investigational. Currently in Phase 3 trials (CagriSema).

HGH Fragment 176-191 is the C-terminal portion of the HGH molecule responsible for its lipolytic activity. It mimics the fat-burning effects of HGH without stimulating IGF-1 or causing insulin resistance. It is used as a targeted fat loss agent, particularly for stubborn adipose tissue.

MOTS-c is a mitochondria-derived peptide encoded by mitochondrial DNA that acts as a metabolic regulator. It improves insulin sensitivity, promotes glucose utilization, and has demonstrated anti-obesity effects in animal models. It represents a novel class of mitochondria-derived signaling peptides.

Retatrutide is an investigational triple agonist targeting GIP, GLP-1, and glucagon receptors simultaneously. Phase 2 clinical trials have shown unprecedented weight loss results, with some participants losing over 24% of body weight. It represents the next frontier in pharmacological obesity treatment.

⚠ Still in clinical trials. Not yet approved. Research chemical only.

Semaglutide is a GLP-1 receptor agonist originally developed for type 2 diabetes (Ozempic) and approved for chronic weight management (Wegovy). It reduces appetite, slows gastric emptying, and improves insulin sensitivity, leading to significant and sustained weight loss. It is the most clinically validated peptide for obesity management.

⚠ Common GI side effects. Requires gradual titration. Prescription required.

Tesamorelin is an FDA-approved GHRH analogue specifically indicated for reducing excess abdominal fat in HIV-associated lipodystrophy. It stimulates GH release, which in turn promotes visceral fat reduction. It has a favorable safety profile compared to exogenous HGH.

Tirzepatide is a novel dual GIP/GLP-1 receptor agonist (Mounjaro/Zepbound) that acts on two incretin pathways simultaneously. Clinical trials demonstrate superior weight loss outcomes compared to semaglutide in head-to-head comparisons. Its dual mechanism also provides excellent glycemic control.

⚠ GI side effects common, especially during titration. Prescription required.