How to Reconstitute Peptides — Complete Step-by-Step Guide 2026

You have received your peptide order — the vials are cold, the COA is included and you are ready to proceed. Before use, you need to reconstitute your peptide: dissolve the lyophilized (freeze-dried) powder into bacteriostatic water to create a stable solution. This guide covers every step clearly.

Equipment You Need

• Your peptide vial (lyophilized powder)
• Bacteriostatic water (BAC water) — available from PEPTARA from $8
• Insulin syringes (1ml, 29–31 gauge) — available at any pharmacy
• Alcohol swabs
• Clean, flat workspace

BAC Water from PEPTARA Health — sterile filtered, non-pyrogenic, 0.9% benzyl alcohol. Essential for peptide reconstitution.

Step 1 — Prepare Your Workspace

Wash your hands for at least 20 seconds. Set up on a clean, flat surface. Allow your peptide vial to reach room temperature before reconstituting — about 15 minutes out of the refrigerator. Cold powder dissolves more slowly and unevenly, which can cause incomplete reconstitution.

Inspect your peptide vial: the powder should be white or off-white and completely dry. Discoloration or moisture may indicate a quality issue — contact us immediately if you notice anything unusual.

Step 2 — Calculate Your BAC Water Volume

The volume of BAC water you add determines your solution concentration. This is simply math — more water means lower concentration (more units per dose), less water means higher concentration (fewer units per dose). Both work equally well.

Quick Reference BAC Water Table

Step 3 — Sterilise Both Vials

Wipe the rubber stopper on both your peptide vial and BAC water vial with a fresh alcohol swab. Allow 10–15 seconds for the alcohol to fully evaporate before inserting a needle. This step is non-negotiable for maintaining sterility.

Step 4 — Draw the BAC Water

Insert your insulin syringe through the BAC water vial stopper. Draw back the plunger to your desired volume. Remove the syringe carefully without contaminating the needle on any surface.

BPC-157 from PEPTARA Health — reconstitute with 2ml BAC water to achieve 2.5mg/ml concentration

Step 5 — Add BAC Water Slowly to Peptide Vial

Insert the syringe through the peptide vial stopper. Angle the needle so water runs down the inside glass wall — do not inject directly onto the powder. Push the plunger slowly over 10–15 seconds. This gentle introduction prevents damaging the peptide.

Step 6 — Allow Passive Dissolution

Do not shake. Gently roll the vial between your palms for 30–60 seconds, or simply set it down and allow 2–5 minutes for passive dissolution. Most peptides dissolve completely at room temperature without intervention.

Step 7 — Inspect the Solution

Once dissolved, your solution should be clear and colourless. A very slight yellow tinge is normal in some peptides. If the solution remains cloudy or shows undissolved material after 10 minutes, gently roll again or allow more time. Contact us if the issue persists.

Step 8 — Store Immediately

Refrigerate your reconstituted peptide at 2–8°C (36–46°F) immediately. Never freeze a reconstituted solution. Once reconstituted, most peptides remain stable for 30–60 days when refrigerated and protected from light.

Common Mistakes to Avoid

• ❌ Injecting water directly onto powder — always run it down the glass wall
• ❌ Shaking the vial — always roll gently
• ❌ Using tap water or distilled water — must be bacteriostatic water
• ❌ Leaving reconstituted peptide at room temperature — refrigerate immediately
• ❌ Reusing syringes — use fresh sterile syringe for every draw
• ❌ Not wiping vials with alcohol — critical sterility step

CJC-1295 + Ipamorelin stack — reconstitute each vial separately with 1ml BAC water per vial