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Selank

Cognitive & Mood Immune System

5mg vial + 2mL BAC water = 10 units = 250mcg — Amounts listed in the Dosify Me data: 250-500mcg — Frequency: daily — Best taken: any consistent time, injection sites commonly rotated

Informational only, not medical advice. Consult a licensed healthcare provider before starting or changing any protocol.

Amounts and schedules here are listed from the Dosify Me compound data (sources below). They are not recommendations: Dosify Me does not tell you what dose to take, so follow your prescriber.

Reconstitution

Vial sizes up to 5 mg are mixed to 2.5 mg/mL. Larger vials hold at most 3 mL of water, so they are mixed more concentrated and need fewer units per dose.

VialBacteriostatic waterConcentration
5 mg2.00 mL2.5 mg/mL
10 mg*3.00 mL3.33 mg/mL

* This size is conventionally mixed more concentrated rather than diluted further — fewer units per dose than smaller vials of this peptide.

Dose to syringe units

On a standard 100-unit (1 mL) insulin syringe, for vials mixed to 2.5 mg/mL (sizes marked * are more concentrated and need fewer units):

DoseSyringe units
250 mcg10.0 units
375 mcg15.0 units
500 mcg20.0 units

Amounts listed in the Dosify Me data: 250–500 mcg. Frequency: daily. Timing: any consistent time, injection sites commonly rotated.

No single consensus protocol — community subcutaneous protocols are reported at 250-500mcg once daily. The 5mg reference vial mixes to 2.5mg/mL. Larger vial size options are capped at ~3mL BAC water instead of diluted further, so they come out more concentrated (fewer units per dose) than this reference size.

Reading units for Selank

Check one row of the table above: 250 mcg is 0.25 mg; 0.25 mg ÷ 2.5 mg/mL = 0.1 mL; 0.1 mL × 100 = 10 units.

What it does

Why it is listed under Cognitive & Mood, Immune System

What users report

Anecdotal and early-research reports, kept apart from the evidence above. Not clinically established.

Side effects

Medication caution

The better-documented mechanism work on Selank concerns GABA signaling and benzodiazepine-like anxiolytic effects rather than serotonin, so overlap with benzodiazepines and other sedating medications is the more defensible concern to raise. Combining it with SSRIs, SNRIs, MAOIs, or other antidepressants has not been studied in humans either way. It is unstudied rather than known-safe; talk to your prescribing doctor before combining.

Selank calculator

Different vial or dose? Open the Selank reconstitution calculator, pre-filled with these numbers.

Frequently asked

How many units is 250 mcg of Selank?

At 2.5 mg/mL (the standard mix for vials up to 5 mg), 250 mcg of Selank is 10.0 units on a 100-unit insulin syringe (0.100 mL).

How many units is 375 mcg of Selank?

At 2.5 mg/mL (the standard mix for vials up to 5 mg), 375 mcg of Selank is 15.0 units on a 100-unit insulin syringe (0.150 mL).

How many units is 500 mcg of Selank?

At 2.5 mg/mL (the standard mix for vials up to 5 mg), 500 mcg of Selank is 20.0 units on a 100-unit insulin syringe (0.200 mL).

How much bacteriostatic water do I add to a 5 mg vial of Selank?

2.00 mL, which gives 2.5 mg/mL. Larger vials hold at most 3 mL of water, so they are mixed more concentrated and need fewer units per dose.

How much bacteriostatic water do I add to a 10 mg vial of Selank?

3.00 mL, which gives 3.33 mg/mL. This size holds at most 3 mL of water, so it is mixed more concentrated and the same dose is fewer units than from a smaller vial.

How often is Selank taken?

Daily. Any consistent time, injection sites commonly rotated Typical cycle: 10–14 days on, ~1 week off; repeat as needed.

Dosify Me does this math for you. Pick the compound, your vial size and dose, and the app draws the exact syringe reading, keeps your schedule and reminders, and logs every dose — privately, on your phone.

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Sources

About these figures

Published by San Tan Group, LLC, the company that makes the Dosify Me app. About Dosify Me

Figures come from the Dosify Me compound database for Selank: concentration is the vial amount ÷ the water volume, and syringe units are the volume in mL × 100 on a U-100 syringe.

Last checked: (changes only when the Selank data changes)

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Figures generated from the Dosify Me compound database on 2026-10-15. Informational use only — not medical advice.