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Mitochondrial-Derived Peptides (MOTS-c, Humanin) Activates PGC-1α and AMPK to drive biogenesis Nuclear gene transcription Rodent models show 30–65% metabolic improvements; human trials ongoing Effects persist 2–4 weeks post-admin…
The table below compares the three peptides with the strongest clinical evidence for sleep improvement. DSIP (Delta Sleep-Inducing Peptide) GABA-A receptor potentiation. Increases inhibitory neurotransmission in VLPO sleep center…
The following table compares four peptide categories studied for cognitive enhancement, outlining mechanisms, administration routes, evidence strength, and practical considerations. Neurotrophic Peptides (Cerebrolysin, NGF analog…
Direct telomerase activation (hTERT upregulation) Epitalon Animal models + small observational human trials 5–7% elongation in vitro; unconfirmed in vivo Theoretically elevated (parallels oncogenic telomerase reactivation) Strong…
BPC-157 VEGF upregulation, NF-κB inhibition, tight junction repair 200–500 mcg daily (SC/IM); 10 mcg/kg (rectal) Subcutaneous: high; Oral (unprotected): low; Oral (enteric): moderate Phase 2 observational data only. No FDA-approv…
The table below compares primary immune-modulating peptides by mechanism, targeted pathway, clinical evidence level, and practical application context. Thymosin Alpha-1 Thymic hormone restoration T-cell maturation (TLR2 → IL-2/IF…
BPC-157 VEGF/FGF pathway activation; angiogenesis; epithelial migration 58% faster ulcer closure at 14 days vs control (J Physiol Pharmacol 2019) 10 mcg/kg daily (subcutaneous) Strongest evidence base for gastric ulcer healing. D…
Palmitoyl Pentapeptide-4 (Matrixyl) TGF-β receptor agonist. Stimulates procollagen I synthesis 18% increase in collagen density (12 weeks, ultrasound-verified). Journal of Cosmetic Dermatology 2023 3–8 ppm in serums Gold standard…
The table below compares three research-grade peptides with documented roles in cellular detoxification pathways. Glutathione, BPC-157, and thymosin alpha-1. Against their mechanisms, evidence base, and practical limitations. Red…
Primary Action Modulate neurotransmitter balance (GABA, orexin) and hormone pathways without receptor antagonism Force sleep through GABA-A receptor agonism or orexin receptor blockade Signal circadian phase shift; minimal direct…
GHRP-2 Ghrelin receptor agonist 7–10× baseline 30–50% Low to moderate (cycle after 8–12 weeks) 100mcg 2–3×/day subcutaneous GHRP-6 6–9× baseline 25–45% Moderate (notable appetite increase) Hexarelin 10–12× baseline 40–60% High (r…
Animal studies consistently demonstrate peptides help with telomere lengthening or preservation, but the biological distance between model organisms and humans introduces significant uncertainty. A 2019 study in Bulletin of Exper…
Peptides don't replace proton pump inhibitors (PPIs) or H. pylori eradication protocols. They augment them. PPIs reduce gastric acid secretion, creating an environment where healing can occur. Peptides accelerate the repair proce…
Melanotropin Peptides MC1R activation → endogenous melanin synthesis in basal epidermis 7–14 days (cumulative dosing) 2–4 weeks (melanin degrades as keratinocytes turn over) Moderate (equivalent to 2–3 weeks of gradual UV exposur…
Active Mechanism Direct MC1R receptor binding → cAMP upregulation → tyrosinase activation → eumelanin synthesis No documented MC1R interaction; mechanisms claimed are precursor supply (tyrosine) or non-specific 'cellular support'…
Before the table: This comparison covers the five peptide categories with the strongest mechanistic rationale for longevity intervention. Immune restoration, telomere preservation, mitochondrial efficiency, neurodegeneration prev…
Before comparing efficacy, understand that peptide interventions are adjunctive—they enhance endogenous repair, they don't replace rest, cognitive rehabilitation, or medical monitoring. Cerebrolysin BDNF/NGF receptor activation; …
Peptides help with female sexual health when the underlying issue is neurological rather than hormonal. Bremelanotide and oxytocin are most effective in women with normal estrogen and testosterone levels but diminished desire. A …
BPC-157 VEGF upregulation, angiogenesis, fibroblast activation Increases collagen synthesis, promotes neovascularisation in avascular tissue Rat Achilles tendon: 40% faster healing vs control (Journal of Physiology and Pharmacolo…
Growth Hormone Secretagogues (MK-677, GHRP-2, Hexarelin) Stimulate pituitary GH release → IGF-1 elevation → mitochondrial biogenesis Direct: ATP production, nutrient partitioning, glycogen sparing 4–6 weeks for measurable perform…