The alcohol acts as a preservative that inhibits the growth of bacteria. This allows the vial to be punctured multiple times for repeated withdrawals for up to 28 days .

Prices can fluctuate significantly depending on the pharmacy and whether you use discount tools like GoodRx . Estimated Price (per 30ml vial) ~$17.09 (can be lower with coupons) Costco CVS Pharmacy BacteriostaticWater.com Vital Safety Warnings

The Quest for Bacteriostatic Water: Sourcing Safely at Walgreens and Beyond

Bacteriostatic water is strictly contraindicated for use in newborns and infants. Their livers cannot process benzyl alcohol, which can lead to "gasping syndrome" or death.

Bacteriostatic Water for Injection (USP) is sterile water containing .