N-Acetyl Selank vs Pinealon
A neutral, side-by-side comparison of two nootropic & cognitive peptides — their mechanisms, dosing ranges, administration routes, side effects, and research evidence. For research and educational purposes only.
N-Acetyl Selank
Acetylated variant of Selank with enhanced stability and bioavailability. The N-acetyl modification protects the peptide from rapid enzymatic degradation, extending its active half-life relative to standard Selank. Provides anxiolytic, nootropic, and immunomodulatory effects comparable to or exceeding standard Selank with potentially greater duration from each dose.
Full profilePinealon
Pinealon is a synthetic tripeptide (Glu-Asp-Arg) developed by the St. Petersburg Institute of Bioregulation and Gerontology — the same institution behind Epithalon and Cortexin. It is a short peptide bioregulator targeting the pineal gland and central nervous system. Research suggests it acts as an epigenetic regulator, penetrating cell nuclei to modulate gene expression in neurons, with reported effects on sleep quality, neuroprotection, circadian rhythm regulation, and age-related cognitive decline.
Full profile| N-Acetyl Selank | Pinealon | |
|---|---|---|
| Category | Nootropic & Cognitive | Nootropic & Cognitive |
| Also known as | Selank-A, N-Ac-Selank, acetylated selank, N-acetyl selank | EDR, Glu-Asp-Arg, Pineal tripeptide |
| Evidence | Research-stage | Research-stage |
| Dosing range | 100mcg–500mcg mcg, 1–2x daily intranasal | 100mcg–300mcg mcg, Once daily (evening, given melatonin/sleep effects) |
| Administration | Intranasal spray, Subcutaneous injection | Subcutaneous injection, Intranasal, Oral (sublingual for better absorption) |
| Key side effects | Mild sedation (acute), Fatigue, Headache (rare), Nasal irritation (intranasal route) | Generally well-tolerated, Drowsiness if dosed during the day, Vivid dreams (common — melatonin pathway activation), Mild headache (uncommon) |
| Cited sources | 2 references | 2 references |
Key differences
- Administration: N-Acetyl Selank — Intranasal spray, Subcutaneous injection; Pinealon — Subcutaneous injection, Intranasal, Oral (sublingual for better absorption).
- Frequency: N-Acetyl Selank is typically 1–2x daily intranasal; Pinealon is Once daily (evening, given melatonin/sleep effects).
How each works
N-Acetyl Selank
N-Acetyl Selank shares Selank's core mechanism — BDNF/NGF upregulation, enkephalinase inhibition, and GABA-A receptor complex modulation — with improved metabolic stability from the N-terminal acetyl group. The acetyl modification protects against aminopeptidase N and angiotensin-converting enzyme cleavage, extending the peptide's active residence time in neural tissue after intranasal administration.
Pinealon
Like other peptide bioregulators from the Khavinson group, Pinealon is proposed to work by penetrating the nuclear membrane and interacting directly with histones and promoter regions to regulate transcription. In vitro studies show Pinealon increases synthesis of serotonin and melatonin precursors in pinealocytes and upregulates antioxidant enzyme expression in neuronal cells. Animal studies demonstrate reduced neuronal apoptosis after hypoxic stress and improved performance in cognitive tasks. Clinical observations from Russian gerontology practice suggest benefits for insomnia, age-related cognitive decline, and neurological recovery.
This comparison aggregates public research and structured profile data for informational purposes only. It is not medical advice and does not recommend either compound for human use. Consult a qualified healthcare provider before considering any peptide.