#1
Epithalon
Short tetrapeptide studied for telomere and pineal-axis effects in Russian longevity research.
~minutes in plasma; effects persist longerSubcutaneous
Best Peptides · anti-aging & longevity
Best Peptides for Anti-Aging and Longevity
The longevity peptide conversation in 2026 has moved past simple "best of" lists into a tracking-first model: the peptides themselves are well-characterized, but whether they shift biological-age biomarkers in your specific physiology is the actual question. Epithalon is the most-cited longevity peptide for telomere-related research; MOTS-c is the mitochondrial-derived peptide with growing human-trial coverage; GHK-Cu has 30+ years of skin and connective-tissue research; tesamorelin has FDA approval and the longest IGF-1 dataset of the GH-axis options. The shared discipline is the same as elsewhere on this site: baseline labs (PhenoAge panel, hs-CRP, fasting insulin, HbA1c, ApoB) before starting, structured re-tests at 12-week intervals, and a willingness to drop a protocol that does not move your numbers.
Editorial angle: Longevity peptide pages usually parrot influencer protocols; this one centers PhenoAge / biological-age biomarker tracking as the only honest signal.
5 peptides commonly tracked for anti-aging & longevity
#2
MOTS-c
Mitochondrially-encoded peptide studied for metabolic and exercise-capacity effects.
Short; exact figures limitedSubcutaneous
#3
GHK-Cu
Copper-binding tripeptide with systemic anti-inflammatory effects and the flagship peptide for skin, collagen, and wound healing.
~minutes in plasma; tissue effects persist much longerSubcutaneous or topical
#4
Tesamorelin
FDA-approved GHRH analog with the strongest IGF-1 response of any peptide in its class.
~26 minutesSubcutaneous (abdominal)
#5
Thymosin Alpha-1
Immune-modulating peptide with decades of clinical use in chronic infection and cancer-adjunct settings.
~2 hoursSubcutaneous
What to Track on a Longevity Protocol
Logging the protocol without the right biomarkers is half the picture. The labs below are the ones MyProtocolStack tracks alongside any anti-aging & longevity protocol — establish a baseline, re-test on a consistent cadence, and compare your trend against the only reference that matters: yourself last quarter.
hs-CRPFasting insulinHbA1cApoBAlbuminNLR
Track these biomarkers free →Frequently Asked Questions
Which peptide is most studied for longevity?
GHK-Cu has the longest research history (30+ years) but most of it is skin/connective-tissue focused. Epithalon has the most longevity-specific human research (Russian trials, telomere endpoints), though the broader research community considers the dataset preliminary. MOTS-c has the most recent and rigorous human metabolic data.
Should I get an epigenetic age test?
A baseline epigenetic-age test (TruDiagnostic, Elysium) plus a re-test at 12 months provides the most direct measurement of biological-age shift. The standard PhenoAge biomarker panel (hs-CRP, albumin, creatinine, fasting glucose, AST, MCV, lymphocyte %, RDW, alkaline phosphatase, WBC) is a much cheaper proxy and tracks well in published validation studies.
Do I cycle these or run continuously?
Epithalon protocols are typically cyclical (10-day course every 4-6 months in published research). MOTS-c and GHK-Cu protocols vary widely. Discuss cycling with your prescribing provider — published research does not yet establish an optimal cadence for any of these.
More peptide collections
For informational and educational purposes only. The peptides discussed on this page are not medical recommendations. MyProtocolStack is a tracking and education platform — it does not diagnose, prescribe, or provide clinical decision support. Always consult a licensed healthcare provider before starting, adjusting, or stopping any peptide protocol. Many peptides discussed here are not FDA-approved for the indications described and require a licensed prescription via a compounding pharmacy.