FOXO4-DRI vs SLU-PP-332
Which should you choose? Here's what you need to know.
The short answer
FOXO4-DRI and SLU-PP-332 are both metabolic / longevity peptides, but they work differently. A D-retro-inverso peptide that disrupts the FOXO4-p53 interaction in senescent cells. Studied as a potential senolytic agent for clearing aged cells. An ERR (Estrogen-Related Receptor) agonist studied as an exercise mimetic. Early research suggests it may replicate some metabolic benefits of exercise. Compare vendor pricing and availability below.
On 19 Sep 2026 Peptide Compare tracked 28 vendors selling FOXO4-DRI, cheapest in stock $3.09 per mg at AMC Essentials, and 20 selling SLU-PP-332, cheapest $7.50 per mg at Nextech Labs.
FOXO4-DRI
Metabolic / LongevityA D-retro-inverso peptide that disrupts the FOXO4-p53 interaction in senescent cells. Studied as a potential senolytic agent for clearing aged cells.
SLU-PP-332
Metabolic / LongevityAn ERR (Estrogen-Related Receptor) agonist studied as an exercise mimetic. Early research suggests it may replicate some metabolic benefits of exercise.
Price & availability
Once you've decided which peptide fits your needs, here's how they compare on price and vendor options. Prices verified Sep 19, 2026.
FOXO4-DRI
SLU-PP-332
$44.99
Starting from
$44.99
$16.95
Avg. price per mg
$158.60
28
Vendors selling it
20
23 options
In stock now
27 options
9.0/10
Top trust score
9.0/10
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Our top-rated vendor for each, based on trust scores, purity testing, and price.
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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.