Epithalon vs FOXO4-DRI
Which should you choose? Here's what you need to know.
The short answer
Epithalon aims to keep cells young by lengthening telomeres. FOXO4-DRI clears out cells that have already become old and dysfunctional. Different strategies for the same goal: slowing aging.
On 20 Sep 2026 Peptide Compare tracked 56 vendors selling Epithalon, cheapest in stock $1.50 per mg at Amino Sequence, and 28 selling FOXO4-DRI, cheapest $3.09 per mg at AMC Essentials.
Epithalon
Metabolic / LongevityEpithalon (epitalon) is a synthetic tetrapeptide originally isolated from the pineal gland. It's studied for activating telomerase — the enzyme that rebuilds telomeres, the protective caps on chromosomes that shorten with age. It may also help regulate circadian rhythms and oxidative stress.
Choose Epithalon if:
You're focused on preventive longevity — protecting cells from aging by maintaining telomere length and supporting cellular replication.
FOXO4-DRI
Metabolic / LongevityFOXO4-DRI is a senolytic peptide designed to selectively eliminate senescent cells — "zombie cells" that have stopped dividing but release inflammatory signals that accelerate aging in surrounding tissue. It works by disrupting the interaction that keeps senescent cells alive, allowing them to undergo natural cell death.
Choose FOXO4-DRI if:
You want to clear out existing senescent cells that are already contributing to inflammation and tissue decline.
Using both together
Epithalon and FOXO4-DRI represent complementary longevity strategies — one prevents cellular aging (telomere maintenance) while the other removes cells that have already aged (senolysis). Some researchers discuss using both, though combined human data doesn't exist yet.
Price & availability
Once you've decided which peptide fits your needs, here's how they compare on price and vendor options. Prices verified Sep 20, 2026.
Epithalon
FOXO4-DRI
$20.00
Starting from
$44.99
$6.34
Avg. price per mg
$16.95
56
Vendors selling it
28
56 options
In stock now
23 options
9.1/10
Top trust score
9.0/10
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Where does this data come from?
We re-check vendor prices continuously and score vendors on Finnrick blind-test results — samples bought anonymously and sent to a lab, not vendor claims. No vendor can pay to rank higher. See our full methodology.