Bacteriostatic Water
Also known as: BAC Water, BW, Sterile Diluent
Sterile water with 0.9% benzyl alcohol preservative for reconstituting peptides.
Overview
Bacteriostatic water is sterile water containing 0.9% benzyl alcohol as a preservative. It is used to reconstitute lyophilized (freeze-dried) peptides for injection. The benzyl alcohol prevents bacterial growth, allowing multi-dose use of reconstituted peptides over days to weeks.
Mechanism of Action
Benzyl alcohol acts as bacteriostatic preservative, inhibiting bacterial reproduction. Does not kill existing bacteria but prevents growth. Allows reconstituted peptides to remain stable for extended periods when refrigerated.
Pharmacokinetics
Carrier solution - no active pharmacokinetics. Peptides retain stability for 2-4 weeks refrigerated after reconstitution.
Dosing Protocols
Note: These are research protocols from literature. This is not medical advice.
Reconstitution
Per peptide instructions
As needed
N/A
Typically 1-2mL per vial
Research Areas
Key Research Findings
- 1Standard diluent for peptide reconstitution
- 2Allows multi-dose vial use
- 30.9% benzyl alcohol concentration
- 4Extends reconstituted peptide stability
Side Effects & Contraindications
Reported Side Effects
- Injection site irritation (rare)
- Allergic reaction to benzyl alcohol (rare)
Contraindications
- Neonates
- Infants
- Benzyl alcohol sensitivity
Safety Considerations
Do not use in neonates or infants (benzyl alcohol toxicity). Use sterile technique. Discard if contamination suspected.
Storage Requirements
Room temperature before use, refrigerate after opening
Scientific References
- 1