How long does an opened bacteriostatic water vial last?

An opened vial of bacteriostatic water is generally considered good for about 28 days when refrigerated at 2 to 8 degrees Celsius. Beyond the labeled expiration, sterility and preservative strength can no longer be assumed, so an expired vial should not be used.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of bacteriostatic water. The most common reconstitution liquid, explained.