Understand the source comparison
Best Peptides for Men 55+ Longevity: Mechanism Comparison
MOTS-C Mitochondrial-derived peptide, activates AMPK, regulates nuclear gene expression for metabolic flexibility Mitochondrial dysfunction, insulin resistance, declining exercise capacity 5–10mg, 2–3×/week Subcutaneous or intranasal Gold standard for metaboli
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- MOTS-C
- Mitochondrial-derived peptide, activates AMPK, regulates nuclear gene expression for metabolic flexibility
- Mitochondrial dysfunction, insulin resistance, declining exercise capacity
- 5–10mg, 2–3×/week
- Subcutaneous or intranasal
- Gold standard for metabolic aging. Addresses root cause of energy decline rather than compensating for it
- BPC-157
- Upregulates VEGF, accelerates fibroblast migration, stabilizes gut-brain axis
- Impaired tissue repair, chronic inflammation, GI barrier dysfunction
- 250–500mcg daily
- Subcutaneous or oral
- Best systemic repair peptide. Works across multiple tissue types simultaneously with low side-effect profile
- GHK-Cu
- Stimulates collagen synthesis, suppresses pro-inflammatory cytokines, modulates 4,000+ genes toward youthful expression
- Collagen loss, chronic inflammation, extracellular matrix degradation
- 1–3mg every other day
- Subcutaneous or topical
- Uniquely effective for tissue remodeling. Gene expression data strongest among non-hormone peptides
- Semax
- Increases BDNF, enhances cerebral blood flow, improves neuroplasticity
- Cognitive decline, reduced hippocampal neurogenesis
- 300–600mcg, 1–2×/day
- Intranasal
- Most reliable nootropic peptide. Effects measurable within one week, no tolerance development
- Selank
- Modulates GABAergic signaling, stabilizes HPA axis, reduces anxiety without sedation
- Chronic stress, HPA dysregulation, immune suppression
- Essential for stress-mediated aging. Prevents cortisol-driven telomere shortening without blunting normal stress response
- Humanin
- Inhibits BAX translocation, enhances mitochondrial resilience to oxidative stress
- Mitochondrial-mediated apoptosis, neurodegenerative risk
- 2–5mg, 2–3×/week
- Subcutaneous
- Neuroprotective focus. Complements MOTS-C by preventing cell death rather than improving energy output