Description
🔍 Bacteriostatic Water
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It’s a sterile, non-pyrogenic water solution used as a diluent or solvent for injectable drugs. pfizermedicalinformation.com+2Pfizer Labeling+2
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It contains 0.9% benzyl alcohol (9 mg/mL) as a preservative to inhibit bacterial growth in the multiple-use vial. Pfizer Labeling+2Drugs.com+2
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The pH is about 5.7 (range 4.5 to 7.0). pfizermedicalinformation.com+2Pfizer Labeling+2
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Because of the benzyl alcohol, it should not be used in neonates (newborns). Pfizer Labeling+2DailyMed+2
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It is packaged as a multiple‐dose vial, so after opening, you can withdraw multiple doses (within a certain time frame). Medline+3Pfizer Labeling+3Drugs.com+3
⚠️ Key Precautions / Risks
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Because it contains benzyl alcohol, do not use it for spinal or epidural injections. Pfizer Labeling+1
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Do not use it in neonates (as mentioned) due to risk of “gasping syndrome” from benzyl alcohol. Pfizer Labeling+2DailyMed+2
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Always check the compatibility of the drug you’re diluting — some drugs cannot safely be mixed with bacteriostatic water or may precipitate. Pfizer Labeling+1
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After mixing, inspect the solution — it must remain clear and free of particles. DailyMed+1




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