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— Ranked guide · 2026

Best Peptides for Longevity and Anti-Aging

Longevity peptide therapy targets the foundational mechanisms of cellular aging: NAD+ depletion, telomere attrition, mitochondrial dysfunction, and impaired DNA repair. The compounds on this list each address a different hallmark of aging, making them complementary rather than redundant — most longevity-focused patients stack 2-3 protocols simultaneously under physician supervision. Clinical evidence varies by compound. NAD+ has the strongest research base; Epitalon, MOTS-c, and SS-31 have more limited human data but compelling preclinical findings.

Medically reviewed by Dr. Gene, MD

The shortlist

  1. 1NAD+ Injection$249
  2. 2GHK-Cu (Injectable)$239
  3. 3Epithalon (Injectable)$249
  4. 4MOTS-c (Injectable)$259
  5. 5SS-31 (Elamipretide) (Injectable)$249

— How they compare

Ranked on the evidence,
not the margin.

  1. 1
    NAD+ Injection
    NAD+ Injection$249

    Most-studied longevity intervention. NAD+ levels decline 50-70% by the seventh decade, driving mitochondrial dysfunction and impaired DNA repair. Direct injection delivers what oral precursors can't.

    Best for

    Foundational longevity protocol for adults 40+. Stack with NMN or GHK-Cu.

    See the full NAD+ Injection protocol
  2. 2
    GHK-Cu (Injectable)
    GHK-Cu (Injectable)$239

    Copper peptide with the most-documented effects on skin, hair, and tissue regeneration. Modulates over 4,000 genes back toward a younger expression profile in Pickart's gene array studies.

    Best for

    Skin and hair quality, wound healing, and systemic anti-aging support.

    See the full GHK-Cu (Injectable) protocol
  3. 3
    Epithalon (Injectable)
    Epithalon (Injectable)$249

    Tetrapeptide that activates telomerase. Khavinson's 25+ years of Russian research showed life-extension effects in animals and improvements in mortality in older adults.

    Best for

    Foundational longevity cycles (10-20 days, repeated 2-3x yearly).

    See the full Epithalon (Injectable) protocol
  4. 4
    MOTS-c (Injectable)
    MOTS-c (Injectable)$259

    Mitochondrially-encoded peptide that regulates metabolic homeostasis and acts as an exercise mimetic. Reverses insulin resistance and improves metabolic flexibility.

    Best for

    Patients with insulin resistance, metabolic syndrome, or sedentary lifestyle.

    See the full MOTS-c (Injectable) protocol
  5. 5
    SS-31 (Elamipretide) (Injectable)
    SS-31 (Elamipretide) (Injectable)$249

    Targets cardiolipin in the inner mitochondrial membrane, restoring electron-transport-chain efficiency. Most-promising mitochondrial-membrane therapy in clinical development.

    Best for

    Patients with fatigue, cardiovascular concerns, or known mitochondrial dysfunction.

    See the full SS-31 (Elamipretide) (Injectable) protocol

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— Common questions

When should I start longevity peptides?

Most longevity physicians recommend starting in the late 30s to early 40s, when measurable biomarker decline begins. Earlier intervention prevents accumulation rather than reversing it.

Can I stack longevity peptides?

Yes, and stacking is the norm. NAD+ + GHK-Cu is the most common combination. Add Epitalon as a cycled intervention 2-3 times yearly. MOTS-c and SS-31 are added based on labs and goals.

Do longevity peptides actually extend lifespan?

Lifespan extension in humans is by definition decades to test. Current evidence is strongest for surrogate markers: NAD+ restoration, telomere maintenance, mitochondrial function, and inflammatory markers. Treat longevity therapy as healthspan optimization, not guaranteed lifespan extension.