BAC water

Description

“BAC water” usually means bacteriostatic water for injection. It’s sterile water that contains a small amount of benzyl alcohol (0.9%), which helps prevent bacterial growth after the vial has been opened.

It’s commonly used to:

• Reconstitute (mix) powdered medications or peptides

• Dilute injectable medications

• Allow multiple uses from the same vial

A few key points:

• The benzyl alcohol acts as a preservative, so an opened vial can typically be used for up to about 28 days if stored properly.

• It’s different from sterile water, which has no preservative and is usually single-use.

• BAC water is not meant for newborns/infants because benzyl alcohol can be dangerous for them.

• It should only be used for medications specifically intended to be mixed with it.