Peptide reconstitution

Glossary / Research Peptides / Peptide reconstitution
RESEARCH PEPTIDES · GLOSSARY ENTRY

Peptide reconstitution

The process of dissolving a lyophilised (freeze-dried) peptide powder in bacteriostatic water before injection.

Why it matters

Most research peptides ship as lyophilised powders for stability. Reconstitution adds a specific volume of bacteriostatic water (water with 0.9% benzyl alcohol) to a vial, dissolving the peptide into an injectable solution. The dilution determines the dose per unit volume injected.

In practice

Common reconstitution practice: calculate the volume of water needed for a desired concentration (e.g., 5mg BPC-157 in 5mL water = 1mg/mL = 100mcg per 0.1mL). Bacteriostatic water rather than sterile water is used because the benzyl alcohol preserves the solution for multi-dose use.

Common confusion

Reconstituted peptides have a finite shelf life in solution (typically 2–8 weeks refrigerated). Older reconstituted vials may have lost potency.

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    This glossary entry is editorial content reviewed against primary sources. It is not medical advice. See our Editorial Policy.

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