Sterile Water for Injection, 10mL single-dose vial. Preservative-free sterile water for single-session medication reconstitution where benzyl alcohol-free or single-dose use is required.
Sterile Water for Injection (SWFI) is pure sterile water with no added preservatives, no sodium chloride, and no other excipients. Each 10mL single-dose vial is for one-time use — once the vial is punctured, the remaining contents must be discarded. SWFI is the right diluent when a drug’s reconstitution instructions specifically call for sterile water, when benzyl alcohol is contraindicated, or when the entire reconstituted volume will be used in a single administration session.
| Specification | Detail |
|---|---|
| Active ingredient | Water for Injection, USP |
| Preservative | None |
| Sodium chloride | None |
| Volume | 10 mL single-dose vial |
| Osmolarity | 0 mOsm/L (hypotonic) |
| Storage | Room temperature; protect from freezing |
| Prescription status | Rx only |
To get pricing, check availability, or place an order, click the Request a Quote button or contact our team directly. A valid medical or pharmacy license is required to purchase prescription and injectable products.
Sterile Water for Injection is hypotonic — it has zero osmolarity on its own. Administering it directly into a vein without a drug dissolved in it causes hemolysis, where red blood cells absorb water and rupture. SWFI must always be used to reconstitute or dilute a medication first. The resulting drug solution achieves appropriate concentration and osmolarity through the drug and its excipients — SWFI is the vehicle, not the product being administered.
| Sterile Water for Injection 10mL (This product) | Bacteriostatic Water 30mL | Bacteriostatic Sodium Chloride 0.9% 10mL | |
|---|---|---|---|
| Preservative | None | Benzyl alcohol 0.9% | Benzyl alcohol 0.9% |
| Sodium chloride | None | None | Yes — isotonic |
| Multi-dose | No — single use only | Yes | Yes |
| Best for | Single-session use; benzyl alcohol-free requirement; drug specifies SWFI | Peptide multi-dose reconstitution | Medications requiring isotonic saline vehicle |
Use SWFI when the drug’s instructions specifically call for sterile water, when the entire vial will be used in one session, or when benzyl alcohol is contraindicated for that patient or medication. For multi-dose reconstitution where the vial will be drawn from across multiple days, use Bacteriostatic Water instead.
Men’s health and peptide practices: Some injectable medications specify Sterile Water for Injection as the reconstitution diluent rather than bacteriostatic water. Following the labeled diluent is a basic dispensing requirement. SWFI is appropriate when the entire reconstituted vial will be used in one sitting or when the medication is incompatible with benzyl alcohol.
IV therapy and clinical practices: Reconstitution of IV medications where the drug’s instructions specify preservative-free sterile water. Also useful where a practice needs a small-volume preservative-free saline alternative for single-use preparation.
Aesthetic and procedural practices: Single-session medication reconstitution for procedures where the vial contents will be fully used during that visit, making multi-dose capability unnecessary.
Any licensed practice needing a benzyl alcohol-free diluent: When a patient has a documented sensitivity to benzyl alcohol, SWFI is the appropriate preservative-free alternative for single-session use.
Bacteriostatic Water for Injection (30mL) — The multi-dose complement to SWFI. Practices stocking both can match the diluent to the medication’s requirements and the dose schedule: SWFI for single-session use or benzyl alcohol-free protocols, Bac Water for multi-dose peptide reconstitution across days.
Bacteriostatic Sodium Chloride 0.9% (10mL) — The isotonic bacteriostatic diluent for medications requiring normal saline as the vehicle. SWFI, Bac Water, and Bac NaCl together cover the three main small-volume sterile diluent scenarios a clinical practice encounters.
Sermorelin / Peptide Injectables — Sterile Water is one option for peptide reconstitution when single-dose use is intended; Bacteriostatic Water is typically preferred for multi-dose peptide vials. Having both available allows practices to follow the specific reconstitution guidance for each product.
Single-dose only — discard after use: SWFI contains no preservative. Once the vial is punctured, microorganisms can enter and grow without inhibition. Discard any unused portion immediately. There is no post-puncture stability period. For multi-dose reconstitution, use Bacteriostatic Water for Injection.
Never inject undiluted: SWFI is hypotonic and causes hemolysis if given IV without first being used to reconstitute a drug. The drug solution must reach appropriate osmolarity before administration. This is non-negotiable.
Follow drug-specific reconstitution instructions: SWFI is correct only when the drug’s labeling calls for it. Using SWFI when the drug requires isotonic saline — or bacteriostatic water when the drug requires SWFI — can affect drug stability, potency, or patient safety.
Not for irrigation: Sterile Water for Injection is not the same product as sterile water for irrigation, which is packaged and labeled for wound or cavity flushing. Do not substitute one for the other.
For use by or on the order of a licensed healthcare provider.
How do I order, and what quantities are available?
Contact our team directly to place an order or request a quote. We supply a range of quantities depending on the product — reach out for current availability, lead times, and volume pricing. A valid medical license is required to purchase prescription and injectable products.
When should I use Sterile Water instead of Bacteriostatic Water?
Use Sterile Water when the drug’s reconstitution instructions specifically call for it, when the entire vial will be fully used in a single session, or when benzyl alcohol is contraindicated. Bacteriostatic Water is the better choice for multi-dose vials that will be drawn from across several days — its benzyl alcohol preservative maintains sterility between punctures in a way SWFI cannot.
Can Sterile Water be given directly by IV without a drug in it?
No. Undiluted SWFI is hypotonic and causes hemolysis. It must always be used to reconstitute or dilute a drug first. Never administer pure sterile water by any parenteral route.
Does Sterile Water for Injection expire after opening?
Effectively, yes. With no bacteriostatic preservative, any unused portion after the first puncture must be discarded immediately. If multi-dose use is needed, Bacteriostatic Water for Injection is the correct product.
Is a prescription requ
For use by or on the order of a licensed healthcare provider.
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