Peptides are shipped as a freeze-dried powder. To use them, you add BAC water to the vial, which dissolves the powder into a stable solution you can draw from. The key idea: the concentration depends on how much BAC water you add. Less water = more concentrated (smaller draw for the same dose). More water = less concentrated (larger draw). Choose an amount that gives you clean, round numbers on your syringe.
Guide
How peptide reconstitution works
Compiled and maintained by the BACwater.ai editorial team and checked against the sources cited on this page. This is general research information, not a medical review. Last updated July 2026.
References
Primary sources for the facts on this page. We cite regulatory and peer-reviewed authorities rather than secondary blogs.
- Bacteriostatic Water for Injection, USP - prescribing information · U.S. FDA labeling via DailyMed (NIH / NLM)Defines bacteriostatic water as sterile water with 0.9% benzyl alcohol added as a bacteriostatic preservative, supplied in a multiple-dose container for diluting or dissolving drugs; contraindicated in neonates.
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