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Cognitive Enhancement Peptides

Cognitive peptides represent a diverse class of nootropic compounds — ranging from Soviet-developed neuropeptides (Semax, Selank) to growth factor mimetics (Dihexa, PE-228) and brain-derived extracts ...

Overview

Cognitive peptides represent a diverse class of nootropic compounds — ranging from Soviet-developed neuropeptides (Semax, Selank) to growth factor mimetics (Dihexa, PE-228) and brain-derived extracts (Cortexin, Pinealon). These compounds work through BDNF upregulation, NGF signaling, anxiolytic pathways, and direct neuroprotection to enhance focus, memory, and mental resilience.

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Semax

ACTH 4-7 Pro-Gly-Pro

Mechanism

Analogue of ACTH 4-7. Increases BDNF, NGF, and serotonin. Reduces anxiety via dopaminergic modulation. Neuroprotective against ischemia.

Benefits

  • ✓Enhanced focus and concentration
  • ✓BDNF and NGF upregulation
  • ✓Reduced anxiety
  • ✓Neuroprotection
  • ✓Improved memory consolidation

Dosing

300–600mcg SubQ or intranasal. Intranasal: 2 drops per nostril of 1% solution.

Reconstitution

30mg + 3mL BAC = 10,000mcg/mL. Draw 3 units for 300mcg.

Cycle Length

2–4 week cycles, 1–2x/year or as needed.

Timing

Morning. Avoid late afternoon (stimulating).

Stacks Well With

Selank (balance stimulation with anxiolysis), BPC-157 for gut-brain axis

Cautions

Stimulating — avoid in evening. May cause mild headache initially.

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Selank

Tuftsin analogue

Mechanism

Tuftsin-derived heptapeptide. Modulates GABA-A receptors and serotonin. Calming without sedation. Reduces anxiety and improves stress resilience.

Benefits

  • ✓Anxiolytic without sedation
  • ✓Improved stress response
  • ✓Enhanced learning
  • ✓Anti-depressant effects
  • ✓Immune modulation

Dosing

250–500mcg SubQ or intranasal. Most effective SubQ for systemic effects.

Reconstitution

10mg + 2mL BAC = 5,000mcg/mL.

Cycle Length

2–4 week cycles. Safe for longer use.

Timing

Morning or as needed for stress/anxiety situations.

Stacks Well With

Semax (focus + calm combination), DSIP for anxiety+sleep

Cautions

Very well tolerated. No significant adverse effects reported.

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PE-228

P-21, BDNF analogue

Mechanism

Mimics BDNF (brain-derived neurotrophic factor). Promotes neurogenesis and synaptic plasticity. Crosses blood-brain barrier more effectively than BDNF itself.

Benefits

  • ✓Neurogenesis
  • ✓Memory enhancement
  • ✓Cognitive flexibility
  • ✓Potential antidepressant effects
  • ✓Long-lasting cognitive improvement

Dosing

100–500mcg daily SubQ.

Reconstitution

10mg + 2mL BAC = 5,000mcg/mL.

Cycle Length

4–8 week cycles.

Timing

Morning SubQ.

Stacks Well With

Semax, Selank, BPC-157

Cautions

Limited human research. Well-tolerated in animal studies.

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Pinealon

EDR tripeptide

Mechanism

Pineal gland tripeptide (Glu-Asp-Arg). Neuroprotective, regulates sleep-wake cycles, antioxidant, promotes melatonin synthesis.

Benefits

  • ✓Neuroprotection
  • ✓Sleep regulation
  • ✓Antioxidant
  • ✓Memory and learning
  • ✓Anti-aging for brain

Dosing

600mcg/day × 10-day cycles.

Reconstitution

20mg + 3mL BAC = 6,667mcg/mL.

Cycle Length

10-day cycles, 2–4x/year.

Timing

Before bed.

Stacks Well With

Epitalon, DSIP

Cautions

Well-tolerated. No significant adverse effects.

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