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Limited human dataNot FDA approved

Selank dosing

Also known as: Selanc · Селанк · TP-7 · TKPRPGP · Thr-Lys-Pro-Arg-Pro-Gly-Pro · Selank acetate · Selank diacetate

Updated 97 sources

Every Selank protocol on file, 24 in all, labelled by where each number came from.

Calculate with SelankSelank overview

Selank dosing by goal

Grouped by goal. Each protocol shows the amount, how often, cycle and rest as the source states them, with every titration step.

Anxiety2

Anxiety, Russian label course (nasal drops)

Amount
250 to 300 mcg
How often
3 times a day, 2 drops in each nostril
Route
Nasal, nasal spray
Cycle
14 days
Rest
1 to 3 weeks before a repeat course, if a doctor advises it; one guide says 1 month

Who: Adults with anxiety states, neurasthenia, stress or adjustment problems, per the Russian label

Note: The label gives drops, not micrograms. The mcg figure is one guide's restatement. Guides convert the label to anything from 450 to 900 mcg a day; 12 drops at 75 mcg each comes to 900, so the 450 figure does not add up. The Russian product is 0.15% (1.5 mg/mL) and one 3 mL bottle lasts about 5 to 7 days per the maker. The current label on Vidal (2025 registration) says only that the dose is set individually.

Anxiety (daily total, guide)

Amount
250 to 500 mcg
How often
Daily total, split into 2 or 3 doses
Route
Nasal, nasal spray
Cycle
14 to 30 days

Subcutaneous3

Subcutaneous, once daily (guide)

Amount
250 to 500 mcg
How often
Once daily
Route
SubQ, vial (powder)
Cycle
4 weeks on
Rest
4 weeks off

Subcutaneous (guide)

Amount
200 to 500 mcg
How often
Once daily
Route
SubQ, vial (powder)

Subcutaneous, weekdays (guide)

Amount
200 to 400 mcg
How often
Once daily, 5 days a week
Route
SubQ, vial (powder)
Cycle
30 days on
Rest
30 days off

Situational nasal2

Situational nasal (guide)

Amount
150 to 300 mcg
How often
As needed
Route
Nasal, nasal spray

Note: The same guide gives 300 to 600 mcg a day for daily use, up to about 900 mcg a day divided, for 2 to 8 weeks.

Situational nasal (community)

Amount
300 to 400 mcg
How often
As needed
Route
Nasal, nasal spray

Note: The user reports each dose lasting 3 to 4 hours.

Other protocols: nasal, nasal spray13

Anxiety trial dose (daily total)

Amount
2,700 mcg
How often
Daily total; how it was split across the day is not reported
Route
Nasal, nasal spray
Cycle
Up to 21 days, per one guide's account of the trial work

Who: Small Russian study in generalized anxiety (n=20), as cited by dosing guides

Note: Guides cite this dose; we could not confirm it in the abstracts we read. A 900 mcg single dose was used in an EEG analysis. One guide says the 2008 medazepam trial used 2.7 mg a day, but that abstract gives no dose.

Intranasal range (daily total, guide)

Amount
600 to 2,700 mcg
How often
Daily total, split into several doses
Route
Nasal, nasal spray
Cycle
14 to 21 days on
Rest
1 to 3 weeks off

Beginner nasal (guide)

Amount
200 to 300 mcg
How often
Once daily
Route
Nasal, nasal spray
Cycle
2 to 4 weeks on
Rest
1 to 2 weeks off

Intermediate nasal (daily total, guide)

Amount
400 to 500 mcg
How often
Daily total, split into 2 doses
Route
Nasal, nasal spray
Cycle
2 to 4 weeks on
Rest
1 to 2 weeks off

Advanced nasal (daily total, guide)

Amount
600 to 900 mcg
How often
Daily total, split into 2 or 3 doses
Route
Nasal, nasal spray
Cycle
2 to 4 weeks on
Rest
1 to 2 weeks off

Cognition (guide)

Amount
300 to 500 mcg
How often
Once daily, in the morning
Route
Nasal, nasal spray
Cycle
10 to 20 days

Immune support (guide)

Amount
400 to 500 mcg
How often
Once daily, in the morning
Route
Nasal, nasal spray
Cycle
21 to 30 days

Note: Immune use shows up mostly in guide content. The evidence is cytokine changes in anxious patients and a mouse influenza model.

Standard nasal (guide)

Amount
200 to 400 mcg
How often
2 to 3 times a day
Route
Nasal, nasal spray

Note: Starts at 200 mcg twice daily. Tops out at 1,000 mcg a day, split across three or more sprays.

Anxiolytic and nootropic nasal (guide)

Amount
250 to 900 mcg
How often
2 to 3 times a day
Route
Nasal, nasal spray
Cycle
30 days on
Rest
30 days off

Split nasal dosing (guide)

Amount
250 to 500 mcg
How often
2 to 3 times a day
Route
Nasal, nasal spray
Cycle
2 to 4 weeks

Nasal spray ramp (daily total, guide)

Amount
200 to 400 mcg
How often
Daily total: about 200 mcg in week 1, then about 400 mcg
Route
Nasal, nasal spray
Cycle
6 weeks
Titration steps for Nasal spray ramp (daily total, guide)
WhenDose
Week 1200 mcg
Weeks 2 to 6400 mcg

Note: Built around a spray that delivers 50 mcg per pump.

Daily nasal, split (community)

Amount
250 to 400 mcg
How often
2 to 3 times a day
Route
Nasal, nasal spray
Cycle
Up to about a month

Note: Reports on r/Peptides include 250 mcg 2 to 3 times a day raised later to 500 mcg twice a day, 300 or 400 mcg 3 times a day, and about 400 mcg twice a day for a month. One user says at least 100 mcg 3 times a day is needed. One guide's tally of community use puts the most common dose at 0.2 to 0.4 mg.

Single morning nasal dose (community)

Amount
800 mcg
How often
Once daily, in the morning
Route
Nasal, nasal spray

Other protocols: injected4

Situational subcutaneous (community)

Amount
250 to 333 mcg
How often
As needed, before events or in the evening for sleep
Route
SubQ, vial (powder)

Daily subcutaneous (community)

Amount
250 to 1,000 mcg
How often
Once daily
Route
SubQ, vial (powder)

Note: Reports run from 250 mcg in the afternoon (one user found 500 mcg too relaxing) to 500 mcg daily, 600 to 800 mcg, and 1 mg in the evening.

Twice daily subcutaneous (community)

Amount
500 mcg
How often
Twice daily
Route
SubQ, vial (powder)

Subcutaneous ramp, weekdays (community)

Amount
300 to 1,000 mcg
How often
Once daily, 5 days on and 2 off
Route
SubQ, vial (powder)
Cycle
8 weeks

Note: Starts at 300 mcg and works up to 1 mg. Another user titrates from 500 to 800 mcg.

Doses shown are what sources report, labelled by origin. Not medical advice.

Community-reported amounts

The Selank amounts people mention most on Reddit, by goal. Counts, not recommendations.
Selank amounts reported on Reddit, by goal, with mention counts
GoalMost reported amounts (mentions)
Focus and mood500 mcg (16), 400 mcg (10), 250 mcg (9), 300 mcg (9)
Goal not stated500 mcg (14), 200 mcg (9), 100 mcg (7), 0.5 mg (4)
From 900 Reddit posts and comments, last mined Oct 23, 2026.

Selank dosing chart by vial size

Units to draw for the doses sources cite most, at every vial size and water volume.
Selank: concentration and U-100 syringe units for each vial size and water volume
WaterStrength200 mcgdose, units250 mcgdose, units500 mcgdose, units
5 mg vial
1 mLCompetitor guide†5 mg/mL40.04 mL50.05 mL100.1 mL
2 mLCompetitor guide†2.5 mg/mL80.08 mL100.1 mL200.2 mL
3 mLCommunity-reported†1.667 mg/mL120.12 mL150.15 mL300.3 mL
6 mLCompetitor guide†0.833 mg/mL240.24 mL300.3 mL600.6 mL
10 mLCompetitor guide†0.5 mg/mL400.4 mL500.5 mL1001 mL
10 mg vial
1 mLCompetitor guide10 mg/mL20.02 mL2.50.025 mL50.05 mL
2 mLCompetitor guide5 mg/mL40.04 mL50.05 mL100.1 mL
3 mLCommunity-reported3.333 mg/mL60.06 mL7.50.075 mL150.15 mL
30 mg vial
3 mLCompetitor guide10 mg/mL20.02 mL2.50.025 mL50.05 mL
6 mLCompetitor guide5 mg/mL40.04 mL50.05 mL100.1 mL
10 mLCompetitor guide3 mg/mL6.70.067 mL8.30.083 mL16.70.167 mL
Units are on a U-100 insulin syringe (100 units = 1 mL). U-50 and U-30 barrels read the same units.† Water volume sourced for a different vial size. The math is exact either way.Water volumes from

Doses shown are what sources report, labelled by origin. Not medical advice.

Calculate with this peptideYour vial, your water, your dose: Selank in syringe units, with the math shown.

Mixing Selank

Diluent: Bacteriostatic water for injection; sterile saline or sterile water for nasal sprays

Water volumes sources use: 1 mL, 2 mL, 3 mL, 6 mL, 10 mL

For sprays, users dilute further so one pump gives the dose they want. 10 mg in 5 mL gives about 200 mcg per 0.1 mL pump; 10 mg in 10 mL gives 100 mcg. Pumps vary from about 0.025 to 0.20 mL, so calibrate yours.

Selank dosing questions

What is the typical Selank dose?

Most guides land at 250 to 500 mcg per nasal dose, 2 to 3 times a day, or 250 to 500 mcg once a day by injection. The full spread runs from 100 to 1,000 mcg per dose and 200 to 2,700 mcg a day. The 2,700 mcg figure comes from a small Russian anxiety study as cited by guides.

How long does one dose last?

In the blood, minutes. The effect lasts longer: the maker says up to 24 hours. Guides say 3 to 6 hours or 12 to 24 hours. Users report about 3 to 4 hours nasal and 4 to 5 hours or all day subQ.

How much Selank is in one spray?

It depends on the mix and the pump. Most pumps deliver about 0.1 mL, so a 2 mg/mL spray gives about 200 mcg per spray. Pump output ranges from about 0.025 to 0.20 mL by device. Ready-made sprays seen by users deliver 50 or 100 mcg per spray.

Can I use bacteriostatic water in a nasal spray?

It works, but users report it burns and can cause nosebleeds. Many use sterile saline or sterile water instead and keep the spray in the fridge.

How should I cycle it?

The label runs 14-day courses with 1 to 3 weeks between them. User patterns include 500 mcg daily for 40 days, 2 weeks off, then repeat; 4 weeks on and 4 off; 5 weeks on and 2 to 4 off; 6 weeks on every 3 months. One user runs it 5 days a week with no breaks.

Sources for these doses

31 sources, each checked by date. Record updated Oct 24, 2026. Numbers are restated in our own words and labelled by where they came from.

Clinical study3

  1. Selank dosingpeptideprotocolwiki.com, via a competitor guide · checked Oct 23, 2026
  2. Selank 10 mg vial dosage protocolpeptidedosages.com, via a competitor guide · checked Oct 23, 2026
  3. Selank vs medazepam in generalized anxiety and neurasthenia (Zozulia 2008)PubMed · checked Oct 23, 2026

Regulatory2

  1. Selank instruction for use (Russian label)selank.ru (Peptogen), archived copy, via a vendor guide · checked Oct 24, 2026
  2. Selank 0.15% nasal drops (Russian label)Vidal, via a reference work · checked Oct 24, 2026

Vendor guide1

  1. Selank questions and answersselank.ru (Peptogen), archived copy · checked Oct 24, 2026

Competitor guide9

  1. Selank dosagepeptidepedia.org · checked Oct 23, 2026
  2. Selank dosage guidepeptidedossier.com · checked Oct 23, 2026
  3. Selank dosage guidepeptidesexplorer.com · checked Oct 23, 2026
  4. Selank quick startpeptidedosingprotocols.com · checked Oct 23, 2026

Community-reported16

  1. Selank has been a game changer (comment)r/Peptides · checked Oct 23, 2026
  2. What dose of Semax/Selank works for you? (comment)r/Peptides · checked Oct 23, 2026
  3. Selank (anger) (comment)r/Peptides · checked Oct 23, 2026
  4. selank for anxiety/panic? (comment)r/Peptides · checked Oct 23, 2026

Back to the full Selank page for side effects, storage, stacks and legal status.