How do I reconstitute peptides with bacteriostatic water?

Draw bacteriostatic water into a syringe, inject slowly down the vial wall (not directly onto powder), then gently swirl until dissolved. Never shake. Store refrigerated at 2-8C and use within 28 days.

How many units should I draw on an insulin syringe?

1 mL equals 100 units on a standard insulin syringe. Divide your required volume in mL by 0.01 to get units. For example, 0.25 mL = 25 units. Use the smallest syringe that fits your dose for better precision.

What syringe size should I use for peptide injections?

0.3 mL (30 unit) syringes offer the best precision for small doses under 0.3 mL. 0.5 mL (50 unit) syringes work for most peptides. 1 mL (100 unit) syringes are needed for larger dose volumes.

Dosing Tools

Peptide Reconstitution Calculator

Calculate peptide doses with our visual syringe guide

Selank Calculator

Calculate reconstitution doses for Selank

Selank profile Accumulation plotter FDA Peptide Reclassification 2026: Which Peptides Are Coming Back

Vial Size (peptide amount)

BAC Water (added to vial)

Desired Dose

Syringe Size

Concentration 5.00 mg/mL

Doses per vial 20

1mL / 100 units

10 units

0.100 mL

How to use: Enter your vial size and the amount of bacteriostatic water you'll add. Then enter your desired dose to see exactly how much to draw.

Tip: 1 mL = 100 units on an insulin syringe. Draw slowly to ensure accuracy.

Selank Reference

Selank Dosing Protocols

Goal	Dose	Frequency
Mild anxiety relief	250mcg	1x daily
Moderate anxiety/cognitive	250mcg	2x daily (morning & evening)
Intensive anxiety support	500mcg	1x daily (divided doses)
Cognitive enhancement	250-350mcg	1x daily (morning)
PTSD support	250mcg	2x daily
Immune support	250mcg	1x daily for 2-4 weeks

Reconstitution Steps

01 Remove vial from refrigeration; allow 10-15 minutes to reach room temperature
02 Clean vial tops with alcohol wipes using circular motion; air dry
03 Calculate reconstitution volume for desired concentration
04 Draw bacteriostatic water into insulin syringe; remove air bubbles
05 Insert needle at 45-degree angle against glass wall
06 Slowly inject BAC water down vial side to minimize foaming
07 Remove needle and gently swirl vial (never shake vigorously)
08 Allow 1-2 minutes if cloudiness remains; swirl until clear
09 Verify final solution is clear and colorless
10 Label with reconstitution date and concentration
11 Refrigerate immediately; use within 30 days

Quick Reference

Typical Dose 250-500mcg per dose

Frequency 1-2x daily (morning and/or evening)

Half-life 2-10 minutes

Storage Reconstituted: 2-8°C, use within 30 days

Cycle 2-8 weeks on

View full Selank profile

Research Purposes Only

These calculators are provided for educational and research purposes only. Always verify calculations and consult with qualified professionals. The information provided is not medical advice. Peptides should only be used in accordance with applicable laws and regulations.