Selank reconstitution calculator

Selank at a glance

5mg vial + 2mL BAC water = 10 units = 250mcg — Frequency: daily — Best taken: any consistent time, injection sites commonly rotated

Full Selank dosing reference — reconstitution per vial size, dose-to-units table, side effects and sources.

What it does

• Synthetic analog of tuftsin, engineered to resist rapid breakdown in the body.
• Studied (mainly in Russia) for anti-anxiety effects reported comparable to benzodiazepines, without sedation.
• Proposed mechanism involves boosting GABA activity and modulating serotonin pathways.
• Approved for clinical use in Russia/Ukraine only; not replicated in Western trials or FDA-approved.

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.

Notes

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.

Side Effects

• Mild sedation or fuzzy thinking if dosed high.
• Nasal stinging with spray use, mostly from the spray.
• Occasional slight headache.
• Injection site irritation.

Selank vial sizes and concentrations

Standard water for each Selank vial size in the Dosify Me data, and the concentration it gives. One unit is 0.01 mL on a U-100 insulin syringe.

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

Syringe units for the listed quantities, by vial size

Worked example for Selank

1. The example vial: 10 mg of Selank, mixed with 3.00 mL of bacteriostatic water.
2. Concentration: 10 mg ÷ 3.00 mL = 3.33 mg/mL.
3. One syringe unit is 0.01 mL, so it holds 3.33 mg/mL × 0.01 mL = 0.033 mg (33.33 mcg).
4. Example quantity: 250 mcg = 0.25 mg.
5. Volume: 0.25 mg ÷ 3.33 mg/mL = 0.075 mL.
6. Syringe reading: 0.075 mL × 100 = 7.5 units.

Label numbers from the Dosify Me data, used to show the arithmetic. Not a recommendation of any quantity.

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.

Related pages and guides

• Selank dosing reference
• How many units is 250 mcg?
• How much bacteriostatic water for a 5 mg vial?
• U-100 vs U-50 insulin syringe for peptides
• Peptide storage and refrigeration
• All peptide guides

Other calculators

General peptide calculator · BAC water calculator · Peptide dosing chart · How to reconstitute peptides · mcg to units chart