Dosage guide · 10 mg vial

Selank Dosage Protocol

Tuftsin analogue · synthetic heptapeptide

The reference schedule is 300 mcg three times daily for days 1–14, totalling 900 mcg a day. With 2 mL of bacteriostatic water, a 10 mg vial is 5 mg/mL, so 300 mcg is 6 units (0.06 mL) on a U-100 syringe. That is concentration math only: the source schedule is intranasal, not an injection conversion.

How often3 times daily

Starting dose300 mcg

Start = volume6 units

Mix2 mL BAC water

Reviewed 25 Oct 2026 · Education only, not medical advice

Selank 10 mg vial

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Dosage chart How to mix Supplies Calculator About Selank References

01 · DOSAGE CHART

Selank dosage chart

14-day intranasal reference · 10 mg vial + 2 mL BAC water

BAC water added

Concentration5 mg/mL

1 unit (U-100)50 mcg= 0.01 mL

How often3 times dailyIntranasal (source route)

2 mL is the reconstitution shown on both supplied 10 mg store pages, giving 5 mg/mL and 6 units for 300 mcg.

The source schedule is intranasal. Units show how much of the mixed vial each amount represents — they are not an injection instruction.

Selank dosage chart for a 10 mg vial mixed with 2 mL of bacteriostatic water
Days	Dose each time	Syringe units	Syringe fill
Days 1–14Start3 times daily	300 mcg	6 units0.06 mL

3 times daily · intranasal research route · 14 days

The reference protocol reports 300 mcg per administration, three times daily, for 14 days (900 mcg a day).

This is an intranasal schedule from a specific 0.15% drop formulation; it must not be converted into an injection schedule.

The units shown by the calculator are vial-concentration mathematics only and do not establish an injectable dose.

Reference-site amounts reflect an intranasal research schedule; Selank has no TGA-approved Australian dose. Education only, not medical advice. Dose amounts adapted from Selank 10 mg vial dosage protocol (PeptideDosages.com); units are recalculated for the vial and mix selected above.

02 · HOW TO MIX

Mixing a 10 mg vial with 2 mL of BAC water

Using a 1 mL (100-unit) insulin syringe, 2 full draws of bacteriostatic water gives 5 mg/mL.

1
Add the water slowly
Wipe both rubber stoppers with an alcohol swab and let them dry. Draw 2 mL of bacteriostatic water and let it run slowly down the inside of the vial wall — not straight onto the powder.
2
Swirl gently
Swirl or roll the vial gently until the powder has dissolved. Give it a few minutes to settle if needed.
3
Don't shake it
Shaking can damage the peptide and cause foaming. Gentle swirling only.
4
Check it's fully clear
Only use it once it is fully clear with no particles. Label the vial with the date and 5 mg/mL, then store it in the fridge at 2–8 °C.

Full illustrated reconstitution guide

03 · SUPPLIES NEEDED

What you'll need

Counts follow the dosage chart above at the highest amount in each step, using a 10 mg vial mixed with 2 mL.

Length of protocol

1Selank 10 mg vial6.3 mg needed in total

11 mL insulin syringesOne per vial mixed

1BAC water 10 mL bottle2 mL used for mixing

2Alcohol swabsStoppers when mixing

Syringes and swabs are sold by Australian pharmacies — Peak Peptides and Pure Performance supply the bacteriostatic water.

Selank 10 mg vialPeak Peptides Australia Selank 10 mg vialPure Performance Australia

Peak Peptides Australia Bacteriostatic water 10 mL

Bacteriostatic water 10 mLPeak Peptides Australia

Pure Performance Australia Bacteriostatic water 10 mL

Bacteriostatic water 10 mLPure Performance Australia

04 · CALCULATOR

Check a different amount

Enter your vial, water and dose to see the matching syringe units.

Concentration Calculator

Labelled Vial Amount (mg)

Verified Final Liquid Volume2 mL

Amount to Evaluate (not a recommendation)

mcg

Concentration

5.00 mg/mL

(5000 mcg/mL)

Calculated Liquid Volume

0.060 mL

Equivalent U-100 volume scale position

6markings (not biological IU)

Illustration of a U-100 volume scale, not preparation or injection guidance

05 · PROTOCOL DETAILS

About Selank

Protocol overview

Reference amount: 300 mcg per administration
Frequency: Three times daily (900 mcg a day)
Reference duration: 14 days
Source route: Intranasal drops or measured intranasal solution
Common mix: 2 mL bacteriostatic water → 5 mg/mL
Important limitation: Do not convert this nasal schedule to injection units

Storage

Before mixing: Store unopened powder at 2–8 °C in the dark, or at −20 °C for long-term storage; protect it from heat and moisture.
After mixing: Keep upright at 2–8 °C, protected from light; Peak states about 28 days for its BAC-water preparation.
Never: Do not freeze the mixed solution or use it if it is cloudy or has particles.

How it works

Selank is a synthetic seven-amino-acid peptide based on the tuftsin sequence.

In a rat frontal-cortex experiment, one intranasal 300 mcg/kg dose was associated with changes in mRNA expression of genes involved in GABAergic, dopamine and serotonin signalling. Animal gene-expression findings do not establish a human mechanism or clinical effect.

Human research has examined anxiety-related measures, enkephalin metabolism and functional brain connectivity, but those findings do not validate a self-directed dose or a different formulation or route.

Illustrated mechanism explainer

What the research shows

A 2012 study in 20 adults aged 24–52 with generalised anxiety disorder used intranasal Selank 2,700 mcg per day. Forty percent were classified as rapid responders by days 1–3 and 60% had gradual improvement through day 14; this was a small, condition-specific study.
A 2008 randomised comparative study involved 62 people with generalised anxiety disorder or neurasthenia: 30 received Selank and 32 received medazepam. The abstract reported similar anxiolytic effects between the two groups.
A 2014 comparative clinical study included 60 people with phobic-anxiety or somatoform disorders; its abstract reported anxiolytic findings, but does not provide a dose or numerical adverse-event rate.
A 2020 functional-connectivity experiment enrolled 52 healthy participants and measured fMRI changes before and 5 and 20 minutes after Selank, Semax or placebo exposure; it was not a clinical efficacy study.
Selank is not listed as a therapeutic good in the Australian product information supplied by Peak, and the TGA says unapproved peptide products have not been assessed for safety, quality or effectiveness.

Reported side effects

The published comparative-study abstracts available here do not provide numerical adverse-event rates, so human safety cannot be quantified from them.
FDA says compounded selank acetate may pose immunogenicity risks from aggregation or peptide-related impurities and that it lacks important safety information for administration to humans.
Nasal formulation, device output, priming and residual volume can change delivery; calculations from a custom vial are not equivalent to the preserved nasal-drop product used in the reference schedule.

Important notes

Selank has no TGA-approved Australian dose. The TGA says unapproved peptide products have not been assessed for safety, quality or effectiveness.
The chart source and human literature are intranasal. Do not treat the calculated U-100 syringe units as an injection instruction or convert the nasal schedule to subcutaneous use.
The 2026 WADA Prohibited List does not name Selank. Anti-doping rules can change and athletes should confirm status with their anti-doping organisation before use.
Never use a mixed vial that is cloudy or has particles in it.

06 · QUICK ANSWERS

Selank questions

How many U-100 units is 300 mcg of Selank?

With 2 mL in a 10 mg vial, the concentration is 5 mg/mL. The arithmetic equivalent of 300 mcg is 6 units (0.06 mL) on a U-100 syringe. This is concentration math only, not an injection instruction: the reference schedule is intranasal.

How much bacteriostatic water is used for Selank 10 mg?

Both supplied 10 mg store pages show 2 mL bacteriostatic water, giving 5 mg/mL. At that concentration, 20 U-100 units equals 1 mg (0.2 mL). This does not reproduce the 0.15% nasal-drop formulation used in the reference schedule.

How long does a 10 mg vial last at 900 mcg a day?

A 10 mg vial contains 10,000 mcg. At 900 mcg a day, it contains about 11.1 days of peptide; a 14-day course uses 12.6 mg, or 1.26 nominal vials, before allowing for preparation or device losses.

What does the 14-day Selank reference schedule say?

The matching 10 mg reference page gives 300 mcg per intranasal administration, three times daily for days 1–14, totalling 900 mcg a day. It specifically says a custom preparation or pump is not equivalent to the registered preserved drop formulation.

07 · SOURCES