# PepTok

> PepTok is a peptide and protocol education catalog with mobile apps for tracking stacks and protocols.

## Site

- [Home](https://www.peptokapp.com/)
- [Peptide catalog](https://www.peptokapp.com/peptides)
- [Protocol templates](https://www.peptokapp.com/protocols)
- [Blog](https://www.peptokapp.com/blogs)
- [Contact](https://www.peptokapp.com/contact)

## Machine-readable discovery

- [API catalog (RFC 9727)](https://www.peptokapp.com/.well-known/api-catalog)
- [Public REST + OpenAPI](https://www.peptokapp.com/api/public)
- [MCP over HTTP](https://www.peptokapp.com/api/mcp)
- [MCP server card](https://www.peptokapp.com/.well-known/mcp/server-card.json)
- [Agent skills index](https://www.peptokapp.com/.well-known/agent-skills/index.json)
- [Sitemap](https://www.peptokapp.com/sitemap.xml)

## Peptides

- [AOD-9604](https://www.peptokapp.com/peptides/aod-9604) — Fragment discussed in fat-metabolism research (not a prescription guide).
- [Acetyl-Hexapeptide-8 (Argireline)](https://www.peptokapp.com/peptides/acetyl-hexapeptide-8-argireline) — Acetyl-Hexapeptide-8, commonly marketed as Argireline, is a synthetic cosmetic peptide used mainly for expression lines and visible wrinkle reduction. It is often described as a “topical neuropeptide-like” anti-wrinkle ingredient because it is designed to interfere with signaling involved in facial muscle contraction at the skin level. Human studies suggest modest improvement in wrinkle appearance, especially around the eyes, but it is best framed as a cosmetic active rather than a medical wrinkle treatment. (“Botox-like” topical peptide in cosmetic formulations targeting expression lines.)
- [Bremelanotide (PT-141)](https://www.peptokapp.com/peptides/bremelanotide-pt-141) — Melanocortin agonist discussed for sexual dysfunction indications where approved.
- [BPC-157](https://www.peptokapp.com/peptides/bpc-157) — BPC-157 is an investigational 15-amino-acid peptide commonly described as a “body protection compound” derived from gastric juice research. It has attracted attention for possible effects on tissue repair, angiogenesis, gut protection, and inflammation in animal models, but human evidence is very limited and it is not FDA approved for medical or wellness use.
- [Cagrilintide](https://www.peptokapp.com/peptides/cagrilintide) — Long-acting amylin analog investigated for weight management alongside GLP-1 pathways.
- [Cerebrolysin](https://www.peptokapp.com/peptides/cerebrolysin) — Porcine brain-derived peptide mixture used in some regions for neurocognitive indications.
- [CJC-1295](https://www.peptokapp.com/peptides/cjc-1295) — CJC-1295 is an investigational synthetic analog of growth hormone–releasing hormone, or GHRH. It is designed to stimulate the pituitary to increase endogenous growth hormone secretion and raise IGF-1 levels. The best-known human studies showed prolonged increases in GH and IGF-1 after single or repeated dosing of the long-acting DAC form, but it is not an FDA-approved drug and current regulatory review raises significant safety and characterization concerns.
- [Collagen Peptides](https://www.peptokapp.com/peptides/collagen-peptides) — Collagen peptides are short amino-acid chains produced by breaking down collagen into smaller, more absorbable fragments, often called hydrolyzed collagen or collagen hydrolysate. They are commonly used for skin, joint, bone, and connective-tissue support. Current human evidence suggests modest benefits for skin hydration, elasticity, wrinkles, and some joint-discomfort outcomes, but results vary by product, dose, and study quality.
- [Dihexa](https://www.peptokapp.com/peptides/dihexa) — Oral oligopeptide derivative discussed for synaptic plasticity preclinical models.
- [DSIP](https://www.peptokapp.com/peptides/dsip) — Delta sleep-inducing peptide discussed in sleep architecture and stress research.
- [Elamipretide (SS-31)](https://www.peptokapp.com/peptides/elamipretide-ss-31) — Mitochondria-targeted tetrapeptide studied in heart failure and mitochondrial disease trials.
- [Epitalon](https://www.peptokapp.com/peptides/epitalon) — Tetrapeptide discussed for pineal/adjacent aging themes in animal research.
- [Follistatin 344](https://www.peptokapp.com/peptides/follistatin-344) — Myostatin-binding protein discussed in muscle and performance research (non-clinical summary).
- [Follitropin Alfa](https://www.peptokapp.com/peptides/follitropin-alfa) — Recombinant follicle-stimulating hormone (FSH) used in fertility treatment protocols.
- [GHK-Cu](https://www.peptokapp.com/peptides/ghk-cu) — GHK-Cu is a naturally occurring copper-peptide complex made from the tripeptide glycyl-L-histidyl-L-lysine (GHK) bound to copper. It is best known for research and cosmetic interest involving skin quality, wound healing, extracellular matrix support, and hair-related applications. Most of the strongest evidence supports topical cosmetic / skin biology use and preclinical regenerative effects, while human clinical data remain limited and direct injectable use raises added regulatory and safety concerns.
- [Growth Hormone Peptide (HGH)](https://www.peptokapp.com/peptides/growth-hormone) — Recombinant human growth hormone (somatropin) used for labeled pituitary and pediatric indications.
- [Humanin](https://www.peptokapp.com/peptides/humanin) — Mitochondrial-derived peptide discussed in cytoprotection and aging research.
- [IGF-1 LR3](https://www.peptokapp.com/peptides/igf-1-lr3) — Long-acting IGF-1 analog discussed in muscle and recovery research (non-approved summary).
- [Ipamorelin](https://www.peptokapp.com/peptides/ipamorelin) — Ipamorelin is a synthetic pentapeptide that acts as a selective ghrelin receptor agonist and growth hormone secretagogue. It is designed to stimulate pulsatile growth hormone release with greater selectivity than older growth hormone–releasing peptides. Human research exists, but evidence is limited, and it is not an FDA-approved treatment for anti-aging, body composition, or wellness use.
- [Kisspeptin 10](https://www.peptokapp.com/peptides/kisspeptin-10) — GnRH upstream agonist peptide studied for reproductive endocrine testing and research.
- [KPV](https://www.peptokapp.com/peptides/kpv) — C-terminal tripeptide fragment of alpha-MSH discussed in immune and barrier research.
- [Mazdutide](https://www.peptokapp.com/peptides/mazdutide) — Investigational dual GLP-1 / glucagon receptor agonist for glycemic and weight endpoints.
- [Melanotan II](https://www.peptokapp.com/peptides/melanotan-ii) — Non-selective melanocortin agonist discussed for tanning and libido (high-risk compound).
- [Ibutamoren (MK-677)](https://www.peptokapp.com/peptides/ibutamoren-mk-677) — Oral ghrelin receptor agonist / growth hormone secretagogue — not a peptide.
- [MOTS-C](https://www.peptokapp.com/peptides/mots-c) — MOTS-C is a 16-amino-acid mitochondrial-derived peptide encoded by the mitochondrial genome. It has drawn major research interest because it appears to regulate metabolic homeostasis, skeletal muscle signaling, and stress responses in preclinical models. The strongest evidence for benefits such as improved insulin sensitivity, exercise-mimetic effects, and healthier aging comes mainly from animal and mechanistic studies, not established human clinical use.
- [P21](https://www.peptokapp.com/peptides/p21) — Peptide nootropic discussed in cognitive recovery threads (limited human data).
- [PEG-MGF](https://www.peptokapp.com/peptides/peg-mgf) — Pegylated mechano-growth factor splice variant discussed in muscle repair research.
- [Retatrutide](https://www.peptokapp.com/peptides/retatrutide) — Retatrutide is an investigational once-weekly triple hormone receptor agonist designed to activate the GIP, GLP-1, and glucagon receptors. In mid-stage obesity trials, it produced substantial weight loss and metabolic improvements, but it remains under clinical investigation and is not yet an approved medicine.
- [Selank](https://www.peptokapp.com/peptides/selank) — Tuftsin-derived peptide explored in anxiety-related research contexts.
- [Semaglutide](https://www.peptokapp.com/peptides/semaglutide) — GLP-1 receptor agonist approved for several metabolic indications in many regions.
- [Semax](https://www.peptokapp.com/peptides/semax) — Nootropic heptapeptide; often discussed for focus and neuro support.
- [Sermorelin](https://www.peptokapp.com/peptides/sermorelin) — Sermorelin is a synthetic growth hormone–releasing hormone (GHRH 1-29) analog that stimulates the pituitary to release endogenous growth hormone. It was historically approved for pediatric growth hormone deficiency and for diagnostic testing of GH secretion, but it is no longer marketed as an FDA-approved product. Human studies showed it could increase growth velocity in some children with GH deficiency, especially during the first year of therapy.
- [Survodutide](https://www.peptokapp.com/peptides/survodutide) — Dual GLP-1 / glucagon receptor agonist in development for obesity and NASH-related endpoints.
- [Thymosin Beta-4 (TB-4)](https://www.peptokapp.com/peptides/thymosin-beta-4) — Full-length 43-amino-acid thymosin beta-4 distinct from TB-500 fragment discussions.
- [TB-500](https://www.peptokapp.com/peptides/tb-500) — Thymosin beta-4 fragment region; common in mobility and training-recovery threads.
- [Tesamorelin](https://www.peptokapp.com/peptides/tesamorelin) — Tesamorelin is a synthetic growth hormone–releasing hormone analog used to stimulate endogenous growth hormone release. In the U.S., it is approved to reduce excess abdominal fat in adults with HIV-associated lipodystrophy. It is not approved as a general anti-aging, muscle-building, or routine weight-loss peptide.
- [Thymosin Alpha-1 (TA1)](https://www.peptokapp.com/peptides/thymosin-alpha-1) — Thymic peptide immune modulator used in some regions for specific immune deficiencies and HBV.
- [Tirzepatide](https://www.peptokapp.com/peptides/tirzepatide) — Dual GIP/GLP-1 agonist approved in several regions for T2D and obesity (brand-dependent).
- [Ziconotide](https://www.peptokapp.com/peptides/ziconotide) — N-type calcium channel blocker peptide for intrathecal severe pain (specialist-only).
- [NAD+](https://www.peptokapp.com/peptides/NAD+) — NAD+ is a naturally occurring coenzyme found in every cell of the body. It plays a central role in cellular energy production, redox balance, and enzyme activity involved in DNA repair and cell signaling. Interest in NAD+ has grown because NAD levels can decline with age, but current human evidence is stronger for changes in biomarkers than for proven anti-aging or wellness outcomes.

## Protocol templates

- [Deep sleep stack](https://www.peptokapp.com/protocols/01HZTMPLP900000000000000) — Community template combining DSIP sleep-architecture discussion with ipamorelin evening pulses — verify interactions with your clinician.
- [GH pulse stack](https://www.peptokapp.com/protocols/01HZTMPLP400000000000000) — Frequently templated GH-secretagogue pair: selective ipamorelin pulses with CJC-1295 (no DAC) in many community protocols — prescribing required where regulated.
- [Glow stack](https://www.peptokapp.com/protocols/01HZTMPLP300000000000000) — Cosmetic-meets-recovery template: topical GHK-Cu with SubQ BPC-157 and TB-500 for users tracking skin and tissue goals together.
- [Immune & repair](https://www.peptokapp.com/protocols/01HZTMPLP700000000000000) — Clinic-adjacent theme: thymic alpha-1 for immune-modulation discussions with BPC-157 for tissue-adjacent logging — specialist oversight assumed.
- [Limitless stack](https://www.peptokapp.com/protocols/01HZTMPLP200000000000000) — Common nootropic pairing in community guides: Semax for drive and attention with Selank for anxious-system balance — routes and legality vary.
- [Metabolic walk template](https://www.peptokapp.com/protocols/01HZTMPLP600000000000000) — Article-driven pairing: log AOD-9604 alongside daily walking blocks — not a weight-loss prescription.
- [Mitochondrial pair](https://www.peptokapp.com/protocols/01HZTMPLP800000000000000) — Longevity-forum style pairing of mitochondrial-derived peptides for metabolic stress and cytoprotection discussions — human data limited.
- [Muscle repair duo](https://www.peptokapp.com/protocols/01HZTMPLPA000000000000000) — Training-injury discourse: local PEG-MGF themes with systemic TB-500 in recovery threads — animal data heavy.
- [Skin micro-cycle](https://www.peptokapp.com/protocols/01HZTMPLP500000000000000) — Topical-only block for users focusing on barrier and cosmetic peptide consistency without injectables.
- [Wolverine stack](https://www.peptokapp.com/protocols/01HZTMPLP100000000000000) — Widely discussed pairing for injury-adjacent recovery logging: localized BPC-157 with systemic TB-500–style cadence (education only).

## Blog

- [Cerebrolysin: The Neuroregenerative Peptide Rewiring Brain Health](https://www.peptokapp.com/blogs/cerebrolysin_the_neuroregenerative_peptide_rewiring_brain_health)
- [Cagrilintide: The Next Evolution in Appetite Control and Sustainable Fat Loss](https://www.peptokapp.com/blogs/cagrilintide_the_next_evolution_in_appetite_control_and_sustainable_fat_loss)
- [Bremelanotide (PT-141): A Central Approach to Libido and Sexual Function](https://www.peptokapp.com/blogs/bremelanotide_pt141_a_central_approach_to_libido_and_sexual_function)
- [AOD-9604: Targeting Fat Loss Through Selective Metabolic Signaling](https://www.peptokapp.com/blogs/aod9604_targeting_fat_loss_through_selective_metabolic_signaling)
- [Argireline (Acetyl Hexapeptide-8): A Targeted Approach to Smoother, Younger-Looking Skin](https://www.peptokapp.com/blogs/argireline_acetyl_hexapeptide8_a_targeted_approach_to_smoother_youngerlooking_skin)
- [Selank: Anti-Anxiety & Calm Focus Peptide](https://www.peptokapp.com/blogs/selank_antianxiety__calm_focus_peptide)
- [CJC-1295: The Peptide for Sustained Growth Hormone Optimization](https://www.peptokapp.com/blogs/cjc1295_the_peptide_for_sustained_growth_hormone_optimization)
- [TB-500: The Peptide for Full-Body Recovery and Regeneration](https://www.peptokapp.com/blogs/tb500_the_peptide_for_fullbody_recovery_and_regeneration)
- [The Wolverine Stack: Heal Faster, Recover Stronger](https://www.peptokapp.com/blogs/the_wolverine_stack_heal_faster_recover_stronger)
- [The Limitless Stack: Unlock Focus, Energy, and Cognitive Performance](https://www.peptokapp.com/blogs/the_limitless_stack_unlock_focus_energy_and_cognitive_performance)
- [BPC-157 & Ipamorelin: Recovery Meets Growth](https://www.peptokapp.com/blogs/bpc157__ipamorelin_recovery_meets_growth)
- [Welcome to PepTok: Build Smarter Protocols, Together](https://www.peptokapp.com/blogs/welcome_to_peptok_build_smarter_protocols_together)

## API (read-only)

Use `GET https://www.peptokapp.com/api/public/peptides`, `GET https://www.peptokapp.com/api/public/protocols`, and related routes documented at `https://www.peptokapp.com/api/public`.