KPV vs Thymosin Alpha-1
Which should you choose? Here's what you need to know.
The short answer
KPV and Thymosin Alpha-1 are both immune / inflammation peptides, but they work differently. A tripeptide derived from alpha-MSH with potent anti-inflammatory properties. Studied for gut inflammation and skin conditions. A thymic peptide that modulates immune function. FDA-orphan drug approved and used clinically in many countries for immune support. Compare vendor pricing and availability below.
On 20 Sep 2026 Peptide Compare tracked 55 vendors selling KPV, cheapest in stock $1.88 per mg at Ignite Peptides, and 37 selling Thymosin Alpha-1, cheapest $3.85 per mg at Step One.
KPV
Immune / InflammationA tripeptide derived from alpha-MSH with potent anti-inflammatory properties. Studied for gut inflammation and skin conditions.
Thymosin Alpha-1
Immune / InflammationA thymic peptide that modulates immune function. FDA-orphan drug approved and used clinically in many countries for immune support.
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.
KPV
Thymosin Alpha-1
$28.00
Starting from
$37.00
$7.67
Avg. price per mg
$8.69
55
Vendors selling it
37
54 options
In stock now
38 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.