Independent · Reader-funded · FTC-compliant affiliate disclosureVol. II · No. 17 April 23, 2026
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BPC-157 $5.65/mg 3.2%|Tirzepatide $10.00/mg 8.1%|Semaglutide $8.85/mg 5.4%|Retatrutide $19.00/mg 2.1%|TB-500 $8.00/mg 1.2%|MOTS-C $8.00/mg 2.0%
cognitive

PE-22-28

Synthetic antidepressant peptide

Cheapest offer
$4.17/mg
4 vendors tracked4 live pricesLast crawl: 2026-04-27 01:38 UTC
About

A seven-residue peptide derived from the spadin sequence (SORT1 fragment), studied for rapid-acting antidepressant effects via TREK-1 channel blockade.

Also known as: Peptide from brain fragment

PE-22-28 · 8mg

2 vendors
VendorGradeRiskPrice$/mgStock
Core Peptides
US
AOperational
$54.00
◎ Best $/mg
$6.75In stockBuy with code →
Atomik Labz
US
B-Operational
$60.00
11.1%
$7.50In stockVisit →
Sorted by $/mg ascendingLast crawl 2026-04-22 · Demo data

PE-22-28 · 10mg

2 vendors
VendorGradeRiskPrice$/mgStock
Lab Sourced
US
B-Operational
$41.65
◎ Best $/mg
$4.17In stockBuy with code →
Purus Peptides
US
B-Operational
$45.00
8.0%
$4.50In stockVisit →
Sorted by $/mg ascendingLast crawl 2026-04-22 · Demo data
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