Everything you need to prepare correctly
Complete guide to reconstitute all your peptides: Retatrutide, GHK-Cu, MT2, BPC-157, TB-500, Tesamorelin. From required materials to dosing per peptide.
Reconstitution by peptide
General recommendations for each type. Use the calculator for precise doses.
Calculator
Use the calculator below to get the exact volume to draw (in syringe units) based on your vial, water amount, and desired dose.
Same math with syringe selection, water/dose presets, and IU scale preview.
Detailed calculator (4 steps, syringe choice)What is reconstitution?
Your peptide arrives in lyophilized form: a white powder in a vial. Lyophilization (freeze-drying) allows the product to be stored for months or years without degradation.
Reconstitution involves adding bacteriostatic water to transform this powder into a liquid solution. It's a simple but important step: proper technique ensures a stable, usable solution.
In summary
Powder + bacteriostatic water = ready-to-use solution. The process takes about 3 minutes.
The materials you need
Gather everything before you start. Available at pharmacies or on our site.
Your vial
Lyophilized peptide (white powder)
The powder is dehydrated for long-term storage. Reconstitution turns it into an injectable solution.
Bacteriostatic water
Sterile solvent (10 ml)
Contains 0.9% benzyl alcohol to limit bacterial growth. Keeps the reconstituted solution for 28 days in the fridge.
Insulin syringe
1 mL, U-100 graduated
Each small mark = 0.01 mL (10 µL). Ideal for precise doses. Available at pharmacies without prescription.
Where to find the materials?
Bacteriostatic water and insulin syringes: at pharmacies, often without prescription. You can also add bacteriostatic water to your order on our site.
The 6 steps in detail
Follow these steps in order. Each step explains the "why" as well as the "how".
Step 1
Prepare your workspace
Hygiene and organization
- 1Wash your hands thoroughly.
- 2Prepare a clean, disinfected surface (workbench, table).
- 3Lay out all materials: vial, bacteriostatic water, syringe, alcohol swabs.
Working in a calm place avoids mistakes. Take your time.
Step 2
Disinfect the vial cap
Crucial step to avoid contamination
- 1Open an alcohol swab (70% isopropyl alcohol).
- 2Gently wipe the rubber cap of the vial.
- 3Let it air dry for 30 seconds. Do not blow on it.
A well-disinfected cap limits the risk of bacterial contamination.
Step 3
Draw the bacteriostatic water
Volume precision
- 1Remove the needle cap from the syringe.
- 2Draw air into the syringe up to the desired volume (e.g. 1 mL).
- 3Insert the needle into the water vial cap, inject the air.
- 4Invert the vial, slowly draw the water up to the graduation.
Injecting air makes drawing easier. Never force.
Step 4
Inject water into the peptide vial
The actual reconstitution
- 1Insert the needle into the peptide vial cap.
- 2Inject the water slowly along the inner wall, never directly onto the powder.
- 3Remove the syringe and needle.
A direct stream onto the powder can create bubbles and denature the peptide.
Step 5
Mix gently
Without shaking
- 1Never shake the vial.
- 2Roll the vial between your palms or tilt it gently.
- 3The powder should dissolve in 1 to 2 minutes. The solution should be clear or slightly opalescent.
Shaking creates shear forces that can degrade the protein.
Step 6
Check and store
Quality control
- 1Verify there are no visible particles or undissolved residue.
- 2If the solution is cloudy or contains particles, do not use.
- 3Store in the refrigerator (2–8 °C) in its original packaging.
Clear solution = ready to use. Cloudy solution = do not use.
Never shake
Shear forces can denature the protein. Mix only by gentle rolling between your palms.
Reconstitution calculator
Enter the 3 values below to know how much to draw on your syringe.
1. How much peptide is in your vial?
2. How much bacteriostatic water will you add?
3. What dose do you want per injection?
Result
Draw on your insulin syringe:
10
units
(soit 0.10 mL)
20
total doses in vial
2500
mcg per mL of solution
* Indicative results for in vitro research. Not medical advice. Products for scientific use only.
Storage: before and after
Before reconstitution
- −20 °C (freezer): 24 to 36 months
- 4 °C (refrigerator): up to 6 months
- Keep away from light and moisture
After reconstitution
- 2–8 °C: 28 days with bacteriostatic water
- 2–8 °C: 7 days with sterile water
- Never refreeze
FAQ
All our peptides, 98.64% purity
Retatrutide, GHK-Cu, MT2, BPC-157, TB-500, Tesamorelin. Discrete shipping in Europe. Card, bank transfer or crypto payment. Documented third-party testing.