Best Peptides for Longevity: Stack and Doses 2026
NAD+, Epitalon, GHK-Cu, and Tesamorelin are the peptides most often grouped under the longevity heading. This is an educational comparison of what they are and why they get mentioned together, not a stack to run.
Educational comparison, not a protocol. This page describes which compounds are discussed for longevity and the mechanism rationale behind grouping them. It contains no doses, frequencies, timing, or cycle structures. Only Tesamorelin has an approved label; the others are research-grade with no established human dosing. Any specifics belong with a licensed clinician.
The Four Compounds, and Why They Are Grouped
NAD+
Nicotinamide adenine dinucleotide. A central cofactor for mitochondrial ATP production and sirtuin activation that declines with age. Studied in the context of cellular energy, DNA repair, and inflammation regulation.
Studied for: Energy, mitochondrial function, sirtuin support
Studied route: IV infusion or subcutaneous
Epitalon
A 4-amino-acid peptide from pineal gland research. Investigated for telomerase activity in some cell lines and for effects on the melatonin and circadian-aging axis.
Studied for: Telomere maintenance, melatonin axis, sleep architecture
Studied route: Subcutaneous
GHK-Cu
Copper tripeptide. Studied for modulating inflammatory cytokines and driving connective tissue regeneration, with gene-expression effects across many repair-related pathways. Skin quality is the most visible early marker.
Studied for: Skin, connective tissue, inflammation
Studied route: Subcutaneous
Tesamorelin
A GHRH analogue that triggers a natural GH pulse. In its approved label context it reduces visceral adipose tissue, the fat depot most linked to metabolic and inflammatory aging.
Studied for: Visceral fat, body composition, IGF-1
Studied route: Subcutaneous
The complementary rationale: the grouping is a story about four mechanisms pointing the same way, energy and DNA repair, the telomere and circadian layer, systemic repair, and body composition. Whether that mechanistic story translates into outcomes in humans is exactly what is not settled, which is why it stays educational.
What the Research Does and Does Not Establish
The evidence is uneven across the four. Tesamorelin is an approved medicine for a defined indication, so its pharmacology is well documented. NAD+ has real and growing research interest. Epitalon and injectable GHK-Cu remain largely research-grade, with much of the supporting data outside large controlled human trials.
Because the evidence is uneven, a single "longevity stack" is not something research supports as a recipe. The most defensible longevity inputs, sleep, training, nutrition, and routine bloodwork, are also the least controversial.
Common Questions
Q: Why are these four peptides discussed together for longevity?
A: Each is associated with a different mechanism connected to aging: NAD+ with mitochondrial energy and DNA repair, Epitalon with the telomere and circadian layer, GHK-Cu with systemic repair, and Tesamorelin with body composition. People group them because the mechanisms point in a similar direction, which is a description of the rationale, not a recommendation to combine them.
Q: Does this page give a longevity stack with doses?
A: No. Despite what the title targets, this page intentionally contains no doses, frequencies, timing, or cycle structures. Those are clinical decisions. Of the four, only Tesamorelin has an approved label, and even there the dosing belongs with a prescriber rather than a web page.
Q: Which of these has the strongest evidence?
A: Tesamorelin is the only one with an approved regulatory label (for a specific medical indication). NAD+ has a growing but still-maturing evidence base. Epitalon and injectable GHK-Cu remain largely research-grade. That spread is exactly why a blanket protocol is not appropriate.
Q: Are these safe to combine?
A: Suitability and interactions are individual. Tesamorelin raises IGF-1, GHK-Cu is pro-angiogenic, and Epitalon's telomerase effects are not fully characterised, all of which matter more in combination. These considerations are why the honest answer is to evaluate any of it with a qualified physician, not to follow a stack.
Cancer & growth caution: Tesamorelin raises IGF-1, GHK-Cu is pro-angiogenic, and Epitalon's telomerase effects are not fully characterised. Anyone with active cancer or a significant cancer history should treat these as off-limits without oncology input. This is one of several reasons the compounds are only appropriate to evaluate with a qualified physician.
Important Disclaimer
Educational content only. Not medical advice, and not a protocol. This page provides no dosing, schedule, or administration guidance. Except where an approved label applies, the compounds discussed are not approved by Vietnam's Ministry of Health (Bộ Y Tế) or the Drug Administration of Vietnam (DAV) for the uses described. Consult a licensed physician before considering any use.