Calm + Clarity Review: PE 22-28 + Pinealon + Selank Nootropic Stack (2026)

Quick Take: Calm + Clarity from Ascension Peptides ($130) is one of the most interesting nootropic blends in the research peptide space — combining PE 22-28 (a novel TREK-1 channel inhibitor with antidepressant-like effects), Pinealon (a pineal bioregulator for sleep and circadian research), and Selank (a well-studied anxiolytic peptide). Each compound brings a distinct mechanism; together they cover stress, sleep architecture, and cognitive function from three directions at once.

Most nootropic peptide research involves running single compounds — Selank for anxiety, Semax for cognition, Pinealon for sleep. The Calm + Clarity blend from Ascension Peptides takes a different approach: combining three mechanistically distinct peptides that target complementary aspects of neurological function. The result is a stack relevant to researchers studying stress response systems, cognitive enhancement, sleep optimization, and anxiety — all of which interconnect in ways that single-compound research often misses.

What's in Calm + Clarity?

• PE 22-28 — 10mg — TREK-1 potassium channel inhibitor; antidepressant-like, neuroprotective, neurogenic
• Pinealon — 10mg — pineal bioregulator; melatonin regulation, circadian rhythm, anti-aging
• Selank — 10mg — anxiolytic, immunomodulatory, GABA-enhancing, memory-improving

PE 22-28: The Most Interesting Compound in the Stack

PE 22-28 is the least known but arguably most compelling compound in this blend. It's a synthetic peptide derived from spadin — a natural peptide that blocks TREK-1, a two-pore domain potassium channel (K2P channel) highly expressed in limbic brain regions associated with mood regulation, anxiety, and cognitive function.

TREK-1 inhibition is a validated antidepressant mechanism — mice lacking TREK-1 are resistant to stress-induced depression and show antidepressant-like behavior in forced swim and tail suspension tests. PE 22-28 was developed as a more stable, potent version of spadin with improved bioavailability. Key research findings:

• Antidepressant-like effects in animal models at very low doses
• Promotes hippocampal neurogenesis (new neuron formation) — a mechanism shared with clinical antidepressants
• Neuroprotective effects in ischemic models
• Enhances BDNF (brain-derived neurotrophic factor) signaling
• Faster onset than traditional antidepressants in animal studies (days rather than weeks)

PE 22-28 is difficult to source as a standalone compound, which makes its inclusion in the Calm + Clarity blend particularly valuable for researchers. Most nootropic peptide catalogs don't carry it at all.

Pinealon: Circadian Regulator and Longevity Bioregulator

Pinealon is a tripeptide bioregulator (Ala-Glu-Asp) derived from the pineal gland by the Khavinson research group in Russia — the same researchers responsible for Epithalon and other peptide bioregulators. It works by penetrating the blood-brain barrier and influencing gene expression in pineal and retinal cells, specifically those involved in melatonin synthesis and circadian regulation.

Research findings on Pinealon include:

• Restores melatonin production in aging animals with declining pineal function
• Improves sleep architecture in older subjects (more time in deep sleep stages)
• Neuroprotective effects in hypoxic conditions — reduces neuronal death in oxygen-deprivation models
• Anti-aging effects mediated through telomere maintenance and reduced oxidative stress in neural tissue
• Retinal protective effects — relevant to age-related visual decline research

In the Calm + Clarity context, Pinealon provides the circadian and sleep architecture component — addressing the sleep quality dimension of stress and cognitive performance that PE 22-28 and Selank don't directly target.

Selank: The Anxiolytic Anchor

Selank is a synthetic heptapeptide analog of tuftsin (an endogenous immunomodulatory peptide) developed by the Institute of Molecular Genetics in Russia. It's one of the most extensively studied peptides in the nootropic space, with a particularly well-documented anxiolytic profile.

Selank's mechanisms:

• GABAergic modulation — enhances GABA-A receptor sensitivity, producing anxiolytic effects similar to benzodiazepines but without dependence risk
• Serotonin system effects — influences serotonin metabolism, potentially contributing to mood stabilization
• BDNF upregulation — increases brain-derived neurotrophic factor, supporting neuroplasticity and memory formation
• IL-6 modulation — reduces excess inflammatory cytokine production, relevant to neuroinflammation research
• Memory enhancement — shown in multiple studies to improve memory consolidation and learning in stress conditions

Clinical research in Russia (where Selank received approval as an anxiolytic) showed significant reductions in anxiety scores in subjects with generalized anxiety disorder, with cognitive benefits observed alongside anxiety reduction — unlike benzodiazepines, which often impair cognition. This cognitive-sparing anxiolytic profile is what makes Selank valuable to researchers beyond simple anxiety models.

Why This Combination Makes Sense

Together, the three compounds cover the full cycle of neurological stress — daytime anxiety (Selank), mood and motivation (PE 22-28), and restorative sleep (Pinealon). This is a more complete model for studying stress-related cognitive impairment than any single compound allows.

Research Protocol

• Selank: 250–500 mcg intranasally or subcutaneously, 1–2× daily (morning and afternoon for anxiety research)
• PE 22-28: 1–5 mg subcutaneously, once daily (typically morning)
• Pinealon: 100–300 mcg intranasally or subcutaneously, once daily 30–60 minutes before sleep
• Cycle: 10–20 day courses, 2–4× per year (mirrors Khavinson bioregulator protocols)

Is $130 Worth It?

PE 22-28 is genuinely rare — most vendors don't stock it at all. Pinealon at $83.99 from Ascension separately, Selank at $46 separately = $130 without PE 22-28. Getting PE 22-28 included in the bundle at no extra cost over those two compounds makes this a straightforward value case for researchers who need all three.

FAQ

Can Selank be taken intranasally?

Yes — intranasal is actually the preferred research administration route for Selank and is used in most clinical studies. It produces rapid CNS availability with lower doses than subcutaneous injection. Reconstitute in sterile saline and use a nasal spray applicator in research settings.

How does Calm + Clarity differ from standard Selank + Semax stacks?

The Selank + Semax stack focuses on anxiety reduction (Selank) and cognitive activation (Semax). Calm + Clarity replaces Semax with PE 22-28 (a novel antidepressant mechanism via TREK-1) and adds Pinealon for sleep architecture. It's better suited for research on stress-related mood disorders and sleep-cognition interaction than pure cognitive enhancement.

Where else can PE 22-28 be sourced?

PE 22-28 is rarely stocked by mainstream peptide vendors due to its novelty. Ascension's inclusion of it in the Calm + Clarity blend is one of the more accessible sources currently available in the US research market.

→ Research Calm + Clarity: Ascension Peptides — PE 22-28 + Pinealon + Selank, 10mg each.

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