FAQs

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Updated June 15, 2025

What is bacteriostatic water and why is it the standard?

When it comes to properly mixing peptides, hormones, or other sensitive compounds, bacteriostatic water is the industry gold standard.

Bacteriostatic water is sterile water that contains 0.9% benzyl alcohol, a preservative that inhibits bacterial growth. This allows for multiple withdrawals from the same vial over a limited period, unlike sterile water, which is intended for single-use only. It is recommended to dispose of the vial 28 days after first use.

Why does using proper bacteriostatic water matter?

Maintaining sterility when mixing research peptides is crucial. Using non-sterile or low-grade water can compromise the integrity of your compounds and introduce contaminants, potentially leading to product degradation or harmful outcomes.

Why choose Pfizer (Hospira) bacteriostatic water?

Pfizer's Hospira brand is one of the only FDA- and Health Canada-recognized manufacturers producing true medical-grade bacteriostatic water. Manufactured in cGMP-certified sterile facilities, each vial meets the highest standards for safety and quality.

What's the difference between Canada- and USA-manufactured Pfizer bacteriostatic water?

Pfizer owns production facilities in both Canada and the U.S.—the only difference between the two is the label:

• Purple labels = USA
• Modernized labels = Canada

Why source from Beyond Pharmacy?

We are a government-audited, licensed Canadian pharmacy offering authentic Pfizer (Hospira) Bacteriostatic Water directly from the source. This ensures you receive genuine, pharmacy-grade product backed by Canadian regulatory oversight.