Pharmaceutical-grade bacteriostatic water. Genuine Pfizer. Shipped from Canada.
Used for peptide reconstitution, hormone therapy, and prescribed medications. Trusted by patients, clinics, and researchers across Canada and the US.
Choose your pack
All products in stock. Same-day shipping from Canada.
Most customers reorder every 28 days.
Why Pfizer bacteriostatic water?
Not all bacteriostatic water is the same. Here's how genuine Pfizer compares to generic vials sold on Amazon and unverified websites.
- Unknown manufacturer, often no company name on label
- No verifiable lot numbers
- Unclear storage and shipping conditions — often shipped in summer heat with no temperature control
- No FDA-regulated manufacturing facility
- Inconsistent fill volumes and preservative concentrations reported in reviews
- No way to verify authenticity
- Manufactured by Pfizer's Hospira division — one of the largest pharmaceutical manufacturers in the world
- Every vial has a verifiable lot number you can check directly with Pfizer
- FDA-regulated cGMP manufacturing facility
- Consistent 0.9% benzyl alcohol preservative, USP-grade water
- We store at controlled room temperature (20–25°C) and ship with care
- Sourced through licensed Canadian pharmaceutical distributors — full chain of custody
Trusted by compounding pharmacies, clinics, and researchers across Canada.
For peptide users
Pfizer bacteriostatic water is the standard for reconstituting lyophilized peptides. The 0.9% benzyl alcohol preservative maintains sterility across multiple withdrawals from the same vial — use it for up to 28 days after first puncture. Each vial includes a verifiable Pfizer lot number so you know exactly what you're injecting.
For prescribed medications
If your physician has prescribed an injectable medication that requires reconstitution, bacteriostatic water is the diluent you need. Commonly used with HCG, growth hormone, semaglutide, tirzepatide, and other medications supplied as lyophilized powder. This is the same Pfizer product your pharmacy carries — shipped directly to your door.