Bacteriostatic Water (Bacteriostatic Water (0.9% Benzyl Alcohol))
Sterile water containing 0.9% benzyl alcohol as a preservative, used to reconstitute (mix) lyophilized peptides for injection. The preservative allows a reconstituted vial to be used repeatedly over multiple days while inhibiting bacterial growth.
How it works
The benzyl alcohol acts as a bacteriostatic preservative, inhibiting bacterial growth so the vial can be entered multiple times over about 28 days. It dissolves lyophilized peptide powder into an injectable solution.
Key facts
- Molecular weight: Water + benzyl alcohol preservative
- Half-life: N/A (solvent)
- Bioavailability: N/A (diluent)
- Storage: Room temperature before use; refrigerate reconstituted vials.
Dosing overview
- Typical dose: Volume to reach target concentration
- Frequency: As needed to reconstitute
- Duration: Vial typically usable ~28 days
- Route: Added to peptide vial for injection
Protocol notes
- Add the calculated volume slowly down the vial wall onto the lyophilized powder; do not shake, swirl gently.
- Choose the volume based on the peptide amount and your desired concentration per unit.
- Store the reconstituted, preserved vial refrigerated and discard after about 28 days.
Reported benefits
- Reconstitutes lyophilized peptides
- Preservative allows multi-day/multi-use vials
- Reduces bacterial contamination risk
Possible side effects
- Benzyl alcohol sensitivity (rare)
- Not for large-volume or neonatal use
- Mild injection stinging in some users
Research
- Preserved diluents for multi-dose vials (2015): Bacteriostatic diluents safely extended multi-use vial life by inhibiting microbial growth in standard clinical use.
Compare Bacteriostatic Water
Research and educational reference only. Not medical advice.