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StackSelank 5.5mgSemax 5.5mg

Cognitive Stack — Selank + Semax (11 mg)

Combined nootropic peptide dosing protocol

Quick Reference

VIAL SIZE11 mg total (Selank 5.5 mg + Semax 5.5 mg — two separate vials)
RECONSTITUTION1.0 mL bacteriostatic water per vial
CONCENTRATION5.5 mg/mL per vial
ROUTESubcutaneous injection
FREQUENCYOnce or twice daily
CYCLE LENGTH4–8 weeks
DOSE RANGESelank: 250–500 mcg · Semax: 250–500 mcg per dose
STORAGE−20 °C lyophilized / 2–8 °C reconstituted (use within 28 days)

Overview

The Cognitive Stack pairs Selank and Semax — two complementary neuropeptides with distinct but synergistic mechanisms. Semax (ACTH 4-7 Pro-Gly-Pro analogue) upregulates BDNF, enhances dopaminergic and serotonergic neurotransmission, and provides neuroprotective, pro-cognitive effects that support mental clarity, motivation, and sustained concentration. Selank (a tuftsin analogue) modulates GABA-A receptor activity, reduces anxiety, and promotes stress resilience without sedation — delivering calm, focused attention. Together, they produce a balanced nootropic effect: Semax drives mental energy and sharpness while Selank maintains emotional stability. Reconstitute each vial separately with 1.0 mL bacteriostatic water for a 5.5 mg/mL working concentration. At this concentration, 1 unit on a U-100 syringe = 55 mcg.

Dosing & Reconstitution Guide

PhaseDaily DoseUnitsVolume
Weeks 1–2 (Selank)250 mcg per dose~5 units0.05 mL
Weeks 3+ (Selank)500 mcg per dose~9 units0.09 mL
Weeks 1–2 (Semax)250 mcg per dose~5 units0.05 mL
Weeks 3+ (Semax)500 mcg per dose~9 units0.09 mL

Reconstitution Instructions

1.

Allow both vials to reach room temperature.

2.

Draw 1.0 mL bacteriostatic water with a sterile syringe; inject slowly down the Selank vial wall and swirl gently until dissolved.

3.

Using a fresh syringe, draw 1.0 mL bacteriostatic water and reconstitute the Semax vial in the same manner.

4.

Label each vial with the compound name and reconstitution date; refrigerate at 2–8 °C, protected from light. Use within 28 days.

This guide is for educational purposes only and is not medical advice. For research use only. Not for human consumption.

Supplies Needed

  • Selank Vials (5.5 mg): 1–2 vials
  • Semax Vials (5.5 mg): 1–2 vials
  • Insulin Syringes (U-100): 56–112 syringes
  • Bacteriostatic Water (10 mL): 1 bottle
  • Alcohol Swabs: 112–224 swabs

Dosing Protocol

Schedule

Administer both peptides once or twice daily via subcutaneous injection. For a split protocol: inject Semax in the morning to leverage its stimulating effects, and Selank in the evening for stress recovery and calm focus. For a combined protocol: inject both in the morning.

Cycle Length

4–8 weeks on, followed by a 2–4 week off period to preserve receptor sensitivity.

Timing

Avoid Semax late in the day if sleep sensitivity is a concern — its stimulatory effects can persist for several hours. Selank is well-tolerated at any time of day.

Storage & Handling

Important Notes