PE 22-28
Spadin Analog · Spadin-Derived Peptide 22-28
Think of it as a mood elevator for your brain's power grid.
PE 22-28 is like a little helper that tunes your brain's electrical system to lift your spirits. It targets a specific channel in your brain cells that usually acts like a dimmer switch, turning down the brightness on your mood. By blocking this channel, PE 22-28 helps dial up the activity of certain brain cells, which can lead to a quicker mood boost.
Unlike traditional mood lifters that might take weeks to kick in, this peptide shows promise in delivering faster results. Researchers have seen antidepressant-like effects in animal tests within hours, which is pretty impressive. Plus, it's designed to be more stable and effective than its predecessor, making it a potentially more efficient option for mood support.
Who it's for
- Individuals looking for a rapid mood lift
- Tech enthusiasts interested in cutting-edge brain science
- People curious about alternatives to traditional mood boosters
Probably not for you if…
- Those uncomfortable with experimental or early-stage compounds
- People seeking a long-term solution without ongoing research
- Individuals sensitive to potential mood fluctuations
Editorial summary for research context · Not medical advice
Mechanism of Action
PE 22-28 is a short 7-amino-acid peptide derived from the spadin sequence, itself a fragment of the propeptide of sortilin. Research suggests it selectively blocks the TREK-1 two-pore-domain potassium channel, which has been implicated in depression-related research based on TREK-1 knockout mouse phenotypes. By inhibiting TREK-1, PE 22-28 is hypothesized to increase serotonergic neuron excitability in the dorsal raphe, producing rapid antidepressant-like effects in rodent models without the delayed onset of SSRIs.
Researched Benefits
TREK-1 blockade
Preclinical electrophysiology confirms selective inhibition of TREK-1 currents, sparing other K2P channels.
- [Veyssiere et al. 2015]
Rapid antidepressant-like activity (rodent)
Forced-swim and novelty-suppressed feeding paradigms show effects emerging within hours in mice.
- [Mazella et al. 2010 (parent spadin)]
Improved drug-like properties vs parent spadin
Shorter sequence is reported to offer better stability and CNS penetration than full-length spadin in preclinical work.
Research Protocols
The following dosing ranges have appeared in published research protocols. Presented for informational purposes only, not a recommendation for human use.
Subcutaneous research (animal-model-derived)
- Dosage
- 250 mcg
- Frequency
- once daily
- Timing
- morning
- Cycle
- 2 weeks
No validated human protocol exists. Rodent research has used low-microgram/kg IP or SC dosing; human equivalents are extrapolation-only.
Reported Side Effects
- Injection-site reactions
- Headache or light-headedness reported anecdotally
- Theoretical concern for mood shifts, insomnia, or overstimulation
- No human safety data published
Contraindications
- Pregnancy and lactation
- Bipolar disorder (theoretical mania risk with antidepressant-like agents)
- Concurrent SSRI, SNRI, or MAOI therapy without medical supervision
- Active psychiatric illness
Stacking Partners
Peptides commonly paired with PE 22-28 in published research and protocol write-ups.
Vendor Pricing
Stacked earns a commission on purchases via these links. It does not influence our Trust Scores.
Gear + Companions
Reconstitution supplies and research-backed supplement companions for PE 22-28. Editorial picks only, we earn a commission through Amazon on the click, no sponsorship.
Gear you'll need
· Reconstitution + storage essentialsBacteriostatic Water 30mL (0.9% Benzyl Alcohol)
Empower Pharmacy / generic medical supply
Reconstitutes every lyophilized peptide. 28-day viability refrigerated.
Insulin Syringes 31G × 5/16" × 0.5mL (100 count)
EasyTouch
31G × 0.5mL insulin syringes — the default size for sub-0.25mL peptide doses.
Alcohol Prep Pads (Sterile, 200 count)
Dynarex
Sterile 70% IPA prep pads — one per vial stopper + one per injection site.
1-Quart Sharps Disposal Container
BD / Becton Dickinson
FDA-cleared sharps container — pharmacies won't accept improvised disposal.
Stacks well with
· Supplement companions, independent evidence, not sponsoredAlpha-GPC 600mg (60 capsules)
Double Wood
Choline donor — upregulates acetylcholine synthesis. Cognitive peptides that boost neurotransmitter signaling still need the substrate.
Lion's Mane Mushroom Extract (120 capsules, 2g/serving)
Host Defense / Paul Stamets
Hericium erinaceus has direct NGF + BDNF evidence. Thematic stack-mate for any neuroprotective or neurogenesis peptide protocol.
Omega-3 Fish Oil (Molecularly Distilled, 240 softgels)
Nordic Naturals
DHA is the structural fat of neural membranes — cognitive peptide protocols benefit from optimized membrane lipids.
As an Amazon Associate we earn from qualifying purchases · Disclosed per FTC guidelines
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Research Papers
A novel strategy for antidepressants: specific blockade of the TREK-1 potassium channel by spadin
Mazella J, et al. · PLoS Biology · 2010
PubMed 20231872 →Retro-inverso analogues of spadin display increased antidepressant effects
Veyssiere J, et al. · Psychopharmacology · 2015
PubMed 25398466 →
Frequently Asked
- What is PE 22-28?
- PE 22-28 is a cognitive studied in laboratory research. This profile covers its researched mechanism of action, study context, reported side-effect profile, and current vendor pricing. For research purposes only; not medical advice.
- Is PE 22-28 legal to buy?
- PE 22-28 is sold strictly for laboratory and research use and is not approved by the FDA for human consumption. Legal status and import rules vary by country and are the buyer's responsibility.
- How much does PE 22-28 cost?
- Compare live $/mg, total price, stock, and each vendor's Stacked Score for PE 22-28 on its price page. Stacked does not sell peptides; it links out to vetted research vendors.