€ Price per mg — honest breakdown
Every PE-22-28 kit ships as 10 vials. Here's the exact maths so you can see which strength gives you the most peptide per euro. Larger kits are usually significantly cheaper per mg.
Kit price
€269
10 mg × 10 vials
Per vial
€26.9
€269 ÷ 10 vials
Total mg in kit
100 mg
10 mg × 10
Per mg
€2.69
€269 ÷ 100 mg
What is PE-22-28?
PE-22-28 is a truncated spadin analogue that selectively blocks the TREK-1 potassium channel. In rodent research it is studied as a fast-acting antidepressant probe with neuroplasticity and post-stroke recovery endpoints.
Mechanism of action
Selective blockade of the two-pore TREK-1 potassium channel, enhancing serotonergic signalling in research models.
Primary research areas
Antidepressant, neuroplasticity and post-stroke recovery research.
Research notes
- Spadin lineage gives clean TREK-1 selectivity for receptor-pharmacology work.
- Frequently studied alongside selank and semax in mood-pathway panels.
Why researchers buy from Regena
HPLC ≥99% purity
Every batch independently tested. Mass spectrometry verification on every research compound. COAs on request.
10-vial kits, properly sealed
Lyophilized peptide, rubber-stoppered amber vials, batch-coded. Stable for shipping; cold storage on arrival.
Ships from Spain, EU-wide
Tracked delivery 2–5 working days across the EU. Discreet, plain packaging. UK & worldwide options.
Secure SEPA bank transfer
Encrypted checkout, verified IBAN. No card details stored. Card payment links available on request.
How ordering works
- 1
Pick your PE-22-28 kit above
Each kit contains 10 vials. Choose your strength — bigger vials give you a lower €/mg.
- 2
Secure checkout in under 2 minutes
Add to cart, fill in shipping, get your IBAN and order reference instantly.
- 3
Pay by bank transfer (or card on request)
Bank transfer is fastest and fee-free. Need a card? Message us on WhatsApp and we'll send a payment link.
- 4
We ship within 24 hours
You get a tracking number by email + WhatsApp. EU delivery 2–5 working days. COA included on request.
Frequently asked questions
Research-use disclaimer
Information on this page is provided for educational and scientific reference purposes only. PE-22-28 is a research compound intended for in-vitro laboratory investigation by qualified professionals. Nothing here constitutes medical advice, dosing guidance or a recommendation for human or veterinary use. Half-life and mechanism descriptions reflect published literature approximations.