PE-22-28 vs Selank: What’s the Difference?
The main difference between PE-22-28 and Selank is mechanism: PE-22-28 is studied for trek-1 potassium channel antidepressant research — Selectively inhibits the TREK-1 two-pore potassium channel, enhancing serotonergic transmission in mood-relevant circuits. Selank is studied for anxiolytic without sedation research — Anxiolytic peptide.
TREK-1 antidepressant peptide vs anxiolytic heptapeptide.
Key differences between PE-22-28 and Selank
- •Mechanism: PE-22-28 — Selectively inhibits the TREK-1 two-pore potassium channel, enhancing serotonergic transmission in mood-relevant circuits. Selank — Anxiolytic peptide.
- •Primary research focus: PE-22-28 is studied for trek-1 potassium channel antidepressant research; Selank is studied for anxiolytic without sedation research.
- •Overlap: the two compounds share brain & cognitive support.
- •Discussion context: PE-22-28 is most often discussed alongside trek-1 potassium channel antidepressant research, while Selank centres on anxiolytic without sedation research.
| Attribute | PE-22-28 Spadin analog | Selank Tuftsin analog |
|---|---|---|
| Category | Brain & Cognitive Support | Brain & Cognitive Support |
| Best known for | TREK-1 potassium channel antidepressant research | Anxiolytic without sedation research |
| Mechanism of action | Selectively inhibits the TREK-1 two-pore potassium channel, enhancing serotonergic transmission in mood-relevant circuits. | Anxiolytic peptide. Modulates neurotransmitters to curb anxiety without sedation. |
| Human research | Not catalogued | Limited |
| Animal research | Not catalogued | Moderate |
| Mechanistic research | Not catalogued | Emerging |
| Study cadence cited | — | Daily as needed |
| In plain English | It blocks a brain potassium channel involved in mood regulation, aiming for fast-acting antidepressant effects. | Selank is the chill peptide. Researchers study how it provides anti-anxiety effects without the sedation or dependence of benzodiazepines. |
| How it works | Selectively inhibits the TREK-1 two-pore potassium channel, enhancing serotonergic transmission in mood-relevant circuits. | Modulates GABA, serotonin, and BDNF; inhibits enkephalinase to increase enkephalin activity. |
| Researchers study | Depression, anxiety, and stress-resilience models. | Generalized anxiety, stress response, and immune modulation. |
| Internet discussion | Discussed in advanced nootropic and mood research circles. | The anti-anxiety peptide of choice on nootropic forums. |
Mechanism and research evidence, side by side
How PE-22-28 and Selank differ at the receptor level, and how much published research currently supports each. Evidence ratings describe the depth of publicly available literature — they are not claims of safety or effectiveness.
Selank
Anxiolytic peptide. Modulates neurotransmitters to curb anxiety without sedation.
- CNS receptor systems (melanocortin, BDNF, GABAergic or sleep-regulating)
- Neurotransmitter and neurotrophic signalling
- Cognition, mood, sleep and libido research endpoints
- Human research
- Limited
- Animal research
- Moderate
- Mechanistic research
- Emerging
Anxiolytic without sedation, stress management
PE-22-28
TREK-1 potassium channel antidepressant research
It blocks a brain potassium channel involved in mood regulation, aiming for fast-acting antidepressant effects.
Selectively inhibits the TREK-1 two-pore potassium channel, enhancing serotonergic transmission in mood-relevant circuits.
Depression, anxiety, and stress-resilience models.
Discussed in advanced nootropic and mood research circles.
PE-22-28 is a spadin-derived TREK-1 blocker researched as a fast-acting antidepressant peptide.
Selank
Anxiolytic without sedation research
Selank is the chill peptide. Researchers study how it provides anti-anxiety effects without the sedation or dependence of benzodiazepines.
Modulates GABA, serotonin, and BDNF; inhibits enkephalinase to increase enkephalin activity.
Generalized anxiety, stress response, and immune modulation.
The anti-anxiety peptide of choice on nootropic forums.
Selank is an anxiolytic nootropic peptide researched for stress reduction without sedation.