Standard Peptide Reconstitution Protocol

Reconstitution is the single highest-leverage technical skill in peptide self-administration. Done right, it preserves peptide integrity and gives you precise per-unit dosing. Done wrong, it degrades the peptide or introduces dosing error.

Materials

• Lyophilized peptide vial (label the mg content — typically 2, 5, or 10 mg)
• Bacteriostatic water (0.9% benzyl alcohol preservative)
• Alcohol wipes (70% isopropyl)
• Insulin syringe, U-100 calibrated, 29–31G, 0.5 mL barrel

Protocol

1. Warm to room temperature. Remove both vials from refrigeration 10–15 minutes ahead.
2. Wipe stoppers. Swab both rubber stoppers with a fresh alcohol wipe.
3. Choose diluent volume. Round numbers make math easier. For a 5 mg vial, 2 mL gives 2.5 mg/mL; 2.5 mL gives 2 mg/mL.
4. Draw diluent. Pull the chosen BAC water volume into the insulin syringe.
5. Inject against the wall. Slowly depress the plunger so the water runs down the inside wall of the peptide vial — never direct a jet onto the powder.
6. Dissolve. Swirl gently in slow circles. Do not shake. Full dissolution typically takes 30–60 seconds.
7. Label and store. Date the vial, note the concentration, and refrigerate at 2–8°C.

Dose calculation

The math has three inputs: mg in vial, mL of diluent, and target dose in mcg.

• Concentration = mg in vial ÷ mL of diluent = mg/mL
• Units per 1 mg = 100 ÷ concentration (mg/mL)
• Units for target dose = (target dose in mcg ÷ 1000) × (100 ÷ concentration)

Worked example — BPC-157, 5 mg vial reconstituted with 2 mL BAC water. Target dose 250 mcg.

• Concentration = 5 ÷ 2 = 2.5 mg/mL
• 1 mL = 100 units on U-100 syringe
• 2.5 mg in 1 mL → 100 units = 2.5 mg = 2500 mcg → 1 unit = 25 mcg
• 250 mcg ÷ 25 mcg/unit = 10 units

Or use the calculator at /calculator — it handles the math.

Storage and shelf life

• Reconstituted peptide, 2–8°C: 21–30 days typical stability. Shelf life is peptide-specific.
• Frozen aliquots, −20°C or lower: months to years.
• Freeze-thaw cycles: avoid. Each cycle degrades a fraction of peptide.

Discard any solution that turns cloudy, discolored, or shows particulate matter.