How to
reconstitute.
Most research peptides ship as a freeze-dried (lyophilized) powder. Reconstitution is the step where you dissolve that powder in bacteriostatic water so it can be dosed accurately. Done carefully it's simple — here's the whole process, plus the math.
What you need
- • Your lyophilized peptide vial
- • Bacteriostatic water (BAC — sterile water with 0.9% benzyl alcohol that lets a vial be used over weeks). Sterile or saline water works for single-use only.
- • An alcohol swab and an insulin syringe (U-100 is standard)
- • A clean, flat surface
The steps
- 1Let both vials reach room temperature. Swab both rubber stoppers with alcohol.
- 2Draw your chosen volume of BAC water into the syringe (see the math below for how much).
- 3Insert the needle at an angle and let the water run slowly down the inside wall of the peptide vial — never squirt it directly onto the powder.
- 4Do not shake. Gently swirl or let it sit; the powder dissolves on its own in a minute or two. A clear solution means it's ready (some peptides stay slightly cloudy).
- 5Label the vial with the date and concentration, then refrigerate.
The math (concentration → units)
How much water you add sets the concentration. More water = more dilute = more units to draw per dose (easier to measure small doses). The formulas:
Worked example: a 5 mg vial (5,000 mcg) + 2 ml BAC water = 2,500 mcg/ml. For a 250 mcg dose: 250 ÷ 2,500 = 0.1 ml = 10 units on a U-100 syringe. That vial holds 20 such doses.
Storage
- • Lyophilized (powder): stable for months to years; cool and dark, fridge or freezer.
- • Reconstituted with BAC water: refrigerate 2–8°C; most peptides stay good ~30 days (some less — check each compound's page).
- • Keep out of light, avoid repeated freeze-thaw, and never leave reconstituted vials at room temperature longer than necessary.
This is general educational information, not medical advice or a recommendation to acquire, possess, or use any compound. Many peptides described on this site are research chemicals not approved for human use in the EU, and some listed compounds are prescription-only. Use sterile technique, never share needles, and consult a licensed physician before starting anything.