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Todas las edicionesMetodologíaActualizado · June 2026
Research guides · 26 compound categories

Long-form research.
Mechanism · administration · safety.

Per-category guides covering mechanism, administration methods, protocols, key studies, expected outcomes, and safety. Each guide is editorial and conservative — claims trace to peer-reviewed publications cited inline.

Cognitive Enhancement Research
BDNF, neuroplasticity, and anxiolytic mechanisms in nootropic peptide research

Semax and Selank are Soviet-era synthetic peptides developed in Russia during the 1970s–80s and still prescribed there today for stroke recovery, anxiety disorders, and cognitive decline. Unlike stimulants (which flood the brain with dopamine) or sedatives (which suppress neuronal activity), these peptides work by upregulating the brain\'s own growth and repair factors. Semax stimulates the production of BDNF — brain-derived neurotrophic factor — a protein critical for learning, memory, and neuronal survival. Selank modulates the GABA system, the brain\'s primary calming pathway, producing anxiolytic effects without the sedation or dependence risk of benzodiazepines. A key practical advantage: both are administered as nasal sprays, bypassing the need for injections.

2 peptides2 studies · 2 Q&A
Immunity Enhancement Research
T-cell modulation, innate immunity, and adjuvant effects in preclinical models

Thymosin Alpha-1 stands apart from most research peptides by having the most robust clinical validation: it is an approved pharmaceutical (Zadaxin®) in over 35 countries including Italy, China, and various Asian and Eastern European nations. The thymus gland produces Thymosin Alpha-1 naturally to "educate" T-cells — white blood cells that coordinate the immune response. As we age, thymic output declines, and with it the efficiency of our immune surveillance. Thymosin Alpha-1 is studied to restore this immune competence: activating natural killer cells, boosting T-cell populations, and enhancing the body\'s response to vaccines and infections. It is of particular interest to self-researchers focused on immune optimisation, post-illness recovery, and age-related immune decline.

1 peptide2 studies · 2 Q&A
Sleep Enhancement Research
Slow-wave sleep modulation and stress-induced insomnia in EEG models

Sleep quality is increasingly recognised as one of the most powerful levers for health, cognitive performance, and longevity. DSIP (Delta Sleep-Inducing Peptide) was discovered in 1977 when researchers isolated it from rabbit blood during natural sleep and found that injecting it into alert rabbits induced slow-wave (deep) sleep within 30 minutes. Unlike sleeping pills, which work by broadly suppressing brain activity, DSIP specifically promotes delta-wave (slow-wave) sleep — the deepest and most restorative stage — without sedation, respiratory depression, or dependence. Selank contributes to this category through its anxiolytic mechanism: by reducing the hyperarousal (racing thoughts, elevated cortisol, difficulty switching off) that underlies stress-induced insomnia, without the muscle-relaxing or respiratory effects of benzodiazepines.

2 peptides1 studies · 2 Q&A
Reproductive Health Research
Melanocortin receptor pharmacology and sexual behaviour in preclinical models

PT-141, known clinically as Bremelanotide and sold as Vyleesi®, is the only FDA-approved peptide specifically for sexual dysfunction — approved in 2019 for hypoactive sexual desire disorder in premenopausal women. What makes PT-141 unique is where it acts: not in the blood vessels, like Viagra or Cialis, but in the brain. It activates melanocortin receptors in the hypothalamus — a region involved in desire, arousal, and motivation — producing an increase in sexual interest that is centrally driven rather than mechanically facilitated. This makes it relevant for addressing the desire and psychological components of sexual dysfunction, which PDE5 inhibitors cannot reach. It has been studied in both men and women, giving it one of the broadest clinical research bases of any peptide on this site.

1 peptide2 studies · 2 Q&A
Editorial methodology
How PeptideGuide rates research peptide vendors — the 5-axis weighted methodology

PeptideGuide rates vendors on 5 weighted axes: Testing (30%), Purity (20%), Regional-Friendliness (20%), Value (15%), Trust (15%). Each axis has a publishable rubric. The composite score 0-10 produces regional leaderboards and Editor\'s Choice designations. The personalized finder applies axis multipliers per buyer-priority answer. Methodology is transparent and quarterly-reviewed. Affiliate commissions do NOT affect scoring.

0 peptides0 studies · 7 Q&A
Editorial methodology
How to read a research peptide Certificate of Analysis — what each test means and what to look for

A genuine CoA names the lab, the batch (lot number), the test methods used, and is signed/dated. Demand HPLC (purity %) AND LC-MS (identity confirmation via molecular mass) at minimum — without both, purity alone tells you nothing about WHAT is pure. CLND verifies absolute peptide content; LAL measures endotoxin (critical for injection research); FTIR confirms structural identity. Independent third-party lab CoAs (Janoshik Analytical, Eurofins, etc.) beat in-house CoAs. Per-batch CoA archive beats a single demo CoA. Apply the 8-item red flag checklist before ordering.

0 peptides0 studies · 7 Q&A
Editorial methodology
Research-use-only labeling explained — what RUO means legally, what it does not mean, and how regulators treat it across markets

RUO ("research use only") is a regulatory positioning device. It places vendors outside pharmaceutical drug regulation and inside research-reagent regulation. It permits sale, advertising (restricted), shipping, and purchase for laboratory research. It does NOT permit therapeutic claims, dosing recommendations for human use, or sale to known therapeutic-use customers. It does NOT certify quality. It does NOT transfer legal use-protection to buyers. Regulatory treatment varies meaningfully across US (FDA), EU (EMA + national agencies), UK (MHRA), AU (TGA Schedule 4 — strictest), JP (PMD-Act + Yakkan Shoumei only for approved-pharma versions), CA (Health Canada NPN/DIN exemption), GCC (SFDA/MoHAP/KFDA/NHRA), Africa (per-country: SAHPRA/NAFDAC/EDA/etc.), LATAM (ANVISA/COFEPRIS/ANMAT/INVIMA/ISP/DIGEMID), and Russia (Roszdravnadzor + sanctions overlay).

0 peptides0 studies · 7 Q&A
Editorial methodology
Peptide reconstitution and bacteriostatic water guide — the math, the materials, the storage realities

Reconstitution math: concentration (mg/mL) = peptide mass (mg) / volume added (mL). Common reconstitutions: 5mg vial + 1mL BAC water = 5mg/mL; 5mg + 2mL = 2.5mg/mL; 5mg + 2.5mL = 2mg/mL. Use bacteriostatic water (BAC water), insulin syringes, refrigerator storage 28-day window for reconstituted vials, refrigerator or freezer for lyophilized vials pre-reconstitution. Lyophilized peptides do NOT require cold-chain shipping — room-temperature international transit is operationally clean. Avoid tap water, distilled water for multi-day use, shaking during reconstitution, and high reconstitution temperatures.

0 peptides0 studies · 7 Q&A
Editorial methodology
The research peptide supply chain explained — manufacturers, vendors, testing, shipping, and where quality actually comes from

4-stage supply chain: Synthesis (mostly Chinese manufacturers, some Slovakia/Cyprus/Spain/Vietnam) → Bulk purchase (vendors buy kilogram-scale) → Repackaging + CoA verification (where consumer-facing vendor differentiation actually happens) → Warehouse + shipping + customer service. Quality lives at stages 1-3, not stage 4. Most consumer vendors buy from the same upstream manufacturers — differentiation comes from testing depth, batch-level verification, and operating history. Particle Peptides (Slovakia) is the EU gold standard via vertical integration. Core Peptides (US) is the US gold standard via multi-lab third-party CoA verification compensating for non-vertical-integration. Weighting testing depth heavily is the buyer\'s rational response to the supply-chain structure.

0 peptides0 studies · 7 Q&A
Editorial methodology
WADA Prohibited List for research peptides — which compounds are banned for tested athletes, what the classes mean, detection windows

WADA Prohibited List applies to tested athletes registered with WADA-Code-adopting federations (Olympic pathway, NCAA, World Athletics, FIFA, national teams in most sports). Most research peptides are banned: BPC-157 (S0 since 2022), TB-500 (S2.4), IGF-1 LR3 (S2.4), CJC-1295/Ipamorelin (S2.5), MGF (S2.4), GHK-Cu injectable (S0). Strict liability — "I didn\'t know" is not a defense. Default 4-year ban for first violations. TUE structurally closed for research-grade compounds. Detection windows 2-10 weeks depending on compound. Out-of-competition testing means no "wash out" strategy is safe. Non-tested athletes (recreational, masters in non-WADA federations) face NO WADA enforcement.

0 peptides0 studies · 7 Q&A
Investigación de crecimiento muscular
Activación de células satélite y señalización hipertrófica en músculo esquelético

CJC-1295, Ipamorelin, GHK-Cu, IGF-1 LR3 son los péptidos más investigados para crecimiento muscular. Todos prohibidos por WADA. Atletas probados en LATAM deben evitar todos. Investigación no institucional sujeta a marcos regulatorios nacionales (Cofepris, ANMAT, etc.).

0 peptides0 studies · 6 Q&A
Investigación de pérdida de peso
Lipólisis, secretagogos de GH, y modulación del tejido adiposo

Tirzepatide y Semaglutide aprobados como medicamentos en LATAM han transformado el espacio de péptidos para pérdida de peso. AOD-9604 y otros siguen siendo research-use-only. Acceso farmacéutico regular es generalmente preferible a importación transfronteriza cuando es posible.

0 peptides0 studies · 6 Q&A
Investigación de curación y regeneración
Aceleración de reparación tisular y cicatrización en modelos preclínicos

BPC-157 y TB-500 son los péptidos más investigados en curación y regeneración. Mecanismos complementarios — vía NO/VEGF (BPC-157) y polimerización de actina (TB-500). Prohibidos por WADA. Investigadores LATAM acceden vía importación transfronteriza con riesgo aduanero variable.

2 peptides0 studies · 6 Q&A
Investigación de longevidad y antienvejecimiento
Biología telomérica, regulación epigenética, y remodelación de matriz extracelular

Epithalon (telomerasa, investigación rusa Khavinson), GHK-Cu (modulación génica), y FOXO4-DRI (senolítico) son los principales compuestos de longevidad research-use-only. Todos bajo S0 en WADA. Investigadores LATAM acceden vía importación transfronteriza; la cadena de frío es crítica.

2 peptides0 studies · 6 Q&A
Marco regulatorio LATAM
COFEPRIS + péptidos de investigación — marco regulatorio mexicano

México tiene uno de los marcos regulatorios LATAM más manejables para péptidos research-use-only. Cofepris regula formalmente pero no enforces contra compradores individuales. Importación transfronteriza con declaración research-use-only es la realidad operativa. Universidades mantienen vías institucionales limpias.

0 peptides0 studies · 6 Q&A
Marco regulatorio LATAM
ANMAT + péptidos en Argentina — marco regulatorio

Argentina tiene un marco regulatorio más estricto que México pero menos que Brasil. ANMAT enfoca cumplimiento contra vendedores con afirmaciones terapéuticas, no contra compradores individuales. Cryptocurrency es esencial dada la situación cambiaria argentina.

0 peptides0 studies · 6 Q&A
Marco regulatorio LATAM
Importar péptidos en LATAM — México, Argentina, Chile, Colombia, Perú

LATAM hispanohablante presenta un mosaico de marcos regulatorios. México es más manejable; Argentina más controlada cambiariamente; Chile / Colombia / Perú intermedios. Investigación institucional vía consejos nacionales y universidades es siempre más limpia que importación individual.

0 peptides0 studies · 6 Q&A
Clasificación de proveedores LATAM
Mejor proveedor de péptidos LATAM 2026 — clasificación basada en metodología

Particle Peptides retiene 2026 LATAM Editor's Choice por rigor de pruebas (7 parámetros) y soporte parcial en español. SwissChems es la opción para mayor comisión de afiliados y catálogo amplio. Ningún vendedor LATAM-doméstico — todas las compras transfronterizas. Cryptocurrency esencial para compradores argentinos.

0 peptides0 studies · 5 Q&A
Comparación cara a cara LATAM
Particle Peptides vs SwissChems — comparación cara a cara LATAM 2026

Particle Peptides gana en rigor de pruebas (7 parámetros) y base de reseñas (308 verificadas). SwissChems gana en comisión de afiliados (20%) y catálogo amplio. Investigadores institucionales y calidad-conscientes deben elegir Particle Peptides. Creadores de contenido pueden preferir SwissChems por la comisión.

0 peptides0 studies · 5 Q&A
Marco regulatorio LATAM
INVIMA + péptidos de investigación — marco regulatorio colombiano

Colombia sigue el patrón regulatorio LATAM general: INVIMA regula formalmente pero la importación research-use-only con declaración correcta opera tolerada. IVA del 19% más aranceles. DHL/FedEx tienen las mejores tasas de aclaración. ONAD Colombia para atletas bajo WADA.

0 peptides0 studies · 6 Q&A
Marco regulatorio LATAM
ISP + péptidos de investigación — marco regulatorio chileno

Chile tiene uno de los marcos de investigación clínica más desarrollados de LATAM (ANID + ISP + universidades). Para investigación no institucional, importación research-use-only con declaración correcta opera tolerada. IVA del 19% sobre valor CIF. Tiempos de tránsito más largos que México/Colombia por geografía.

0 peptides0 studies · 6 Q&A
Marco regulatorio LATAM
DIGEMID + péptidos de investigación — marco regulatorio peruano

Perú sigue el patrón regulatorio LATAM general: DIGEMID regula formalmente pero la importación research-use-only con declaración correcta opera tolerada. IGV del 18% sobre valor CIF. SwissChems y Particle Peptides tienen las mejores tasas de aclaración hacia Perú.

0 peptides0 studies · 6 Q&A
Análisis de proveedores LATAM
SwissChems revisión completa 2026 — proveedor estadounidense para el mercado LATAM

SwissChems es proveedor mid-tier estadounidense para el mercado LATAM. HPLC + LC-MS, pureza 99.3%. Envío 5-18 días EE.UU.-LATAM vía DHL Express. Comisión de afiliados la más alta del segmento (20%, sin cookie). Perfil aduanero más limpio en México y Colombia; más variable en Argentina y Chile. Para la mayoría de los compradores latinoamericanos, [Particle Peptides](/research/particle-peptides-vs-swisschems-latam-comparacion) permanece Editor's Choice via profundidad de pruebas superior.

0 peptides0 studies · 4 Q&A
Análisis de proveedores LATAM
Particle Peptides revisión completa 2026 — Editor's Choice para investigadores latinoamericanos

Particle Peptides UE es Editor's Choice para LATAM. Pruebas 7 parámetros a la Farmacopea Europea. Certificaciones ISO 9001 + ISO 13485. 4.9/5 Trustpilot 308+ avaliações verificadas — la base más grande del segmento globalmente. Envío 7-15 días UE-LATAM vía DHL Express. Programa de afiliados 15%/10% con cookie 365 días. Para la mayoría de los compradores latinoamericanos, esta es la elección operacionalmente correcta vs competidores US-origen.

0 peptides0 studies · 4 Q&A
Análisis de proveedores LATAM
Behemoth Labz revisión completa 2026 — proveedor US-doméstico con programa de afiliados activo en LATAM

Behemoth Labz es mid-tier US-doméstico con programa de afiliados activo (aff/238 link) para el mercado LATAM. HPLC + LC-MS, pureza 98.5%. Envío 7-14 días EE.UU.-LATAM. 10% comisión con cookie 30 días. Ventaja marginal de precio vs SwissChems. Para calidad superior, [Particle Peptides UE](/research/particle-peptides-revision-completa-latam-2026) permanece la elección.

0 peptides0 studies · 4 Q&A
Análisis de proveedores LATAM
PeptidesDirect revisión completa 2026 — proveedor UE multilingual con 13 idiomas + SEPA institucional

PeptidesDirect es el proveedor UE multilingual (13 idiomas incluyendo ESPAÑOL) + SEPA institucional. HPLC + LC-MS + Janoshik third-party verificación. Pureza 99.0%. 4 años de historial operativo. Para compradores latinoamericanos priorizando soporte español dedicado o procurement institucional vía bank transfer. Sin programa de afiliados. Para calidad máxima de pruebas, [Particle Peptides](/research/particle-peptides-revision-completa-latam-2026) supera; para soporte español, PeptidesDirect es única opción UE.

0 peptides0 studies · 4 Q&A