A bacteriostatic water 25 pack holds 25 sealed multi-dose vials for reconstituting peptides and diluting meds. Learn sizes, uses, storage, and buying tips.
A bacteriostatic water 25 pack is a bulk package of 25 individually sealed multi-dose vials of sterile water containing 0.9% benzyl alcohol. Each vial typically holds 10 mL or 30 mL, and the benzyl alcohol inhibits bacterial growth after the rubber stopper is punctured. This format is sold mainly for laboratory, research, and compounding use, not for casual human injection.
What Is Bacteriostatic Water?
Bacteriostatic water is sterile water that contains 0.9% benzyl alcohol as a preservative. The preservative allows a single vial to be punctured multiple times without immediately contaminating the remaining liquid.
It is not the same as plain sterile water or normal saline. Sterile water contains no preservative and must be used once. Normal saline contains 0.9% sodium chloride and is used for different purposes.
Common uses include reconstituting lyophilized peptides, hormones, and other powders in research settings, and diluting medications for multi-dose vials in clinical settings. Smaller formats such as bacteriostatic water 10ml vials are common for single peptide reconstitution, while 30 mL vials suit larger batches.
What Is Included in a Bacteriostatic Water 25 Pack?
A standard 25 pack contains 25 sealed glass vials, each with a rubber stopper and an aluminum flip-off cap. The pack usually includes lot numbers and expiration dates for each vial. Syringes, needles, and alcohol swabs are not included unless the seller bundles them separately.
| Format | Volume per Vial | Vials per Pack | Best For | Relative Cost per Vial |
|---|---|---|---|---|
| Single vial | 10 mL | 1 | Trying one peptide or small batch | Highest |
| Single vial | 30 mL | 1 | Multiple reconstitutions from one bottle | High |
| 25 pack | 10 mL | 25 | Frequent small-batch research | Low |
| 25 pack | 30 mL | 25 | High-volume lab or compounding use | Lowest |
The 25 pack size is designed for users who go through several vials per month. Buying in bulk lowers the cost per vial, but you must be able to store the vials properly and use them before the expiration date.
Bacteriostatic Water 25 Pack vs. Smaller Options
The main advantage of a 25 pack is cost. Per-vial pricing can be 30% to 60% lower than buying single vials, depending on the supplier and volume.
The main disadvantage is commitment. Unopened vials last until their printed expiration date, but once you puncture a vial, it should be discarded after 28 days. If you only need one or two vials per month, a 25 pack may expire before you finish it.
Branded options such as hospira bacteriostatic water 25 pack are often sought for consistent manufacturing standards. Generic equivalents that meet USP standards work the same way when stored correctly.
Where to Buy Bacteriostatic Water in the US
If you are wondering where to buy bacteriostatic water, start with independent compounding pharmacies, medical supply distributors, and reputable research chemical suppliers. Availability varies by state, and some sellers require a prescription or proof of professional use.
Large retail chains are hit or miss. A search for bacteriostatic water cvs usually returns special-order or out-of-stock results because most CVS locations do not keep it on the shelf. Walgreens is similar. Calling ahead to a local pharmacy is usually faster than driving around.
Online marketplaces such as bacteriostatic water amazon list many 25 packs, but quality and labeling vary widely. Check the seller's license, the expiration date, and whether the product is labeled for research use only or for injection, USP.
How to Store and Handle a 25-Pack
Proper storage keeps bacteriostatic water effective and safe to use. Follow these basic rules:
- Store unopened vials at room temperature, between 20°C and 25°C (68°F to 77°F).
- Keep vials away from direct sunlight and heat sources.
- Do not freeze bacteriostatic water. Freezing can damage the vial and the preservative.
- Before each puncture, swab the rubber stopper with 70% isopropyl alcohol and let it dry.
- After the first puncture, write the date on the vial and discard it 28 days later, even if liquid remains.
- Do not use any vial that is cloudy, discolored, or contains particles.
- Keep the 25 pack out of reach of children and pets.
Safety, Legal, and Regulatory Notes
Bacteriostatic water is a diluent, not a treatment. It should never be used as a standalone injection.
Bacteriostatic water labeled for research use only is not FDA-approved for human injection. Bacteriostatic water for injection, USP, is an FDA-approved diluent when a healthcare professional uses it as directed.
Benzyl alcohol can cause serious reactions in newborns and should not be injected intrathecally or used in neonates. People with known benzyl alcohol sensitivity should avoid it.
In the United States, some states require a prescription for injectable bacteriostatic water, while others allow over-the-counter purchase for research use. Always check your state's rules and consult a healthcare professional before injecting any substance.
A bacteriostatic water 25 pack is a practical bulk option for labs, compounding pharmacies, and experienced researchers who need a steady supply of preserved sterile water. It is not a casual purchase, and it is not a substitute for medical advice. Compare pack sizes, verify the seller, store the vials correctly, and follow the 28-day rule after puncture.
Frequently Asked Questions
What is a bacteriostatic water 25 pack used for?
A bacteriostatic water 25 pack is used to reconstitute powdered medications and peptides and to dilute injectable solutions in multi-dose settings. The benzyl alcohol slows bacterial growth, so the same vial can be used more than once within 28 days. It is not a treatment on its own.
Can I buy a bacteriostatic water 25 pack at CVS or Walgreens?
Most CVS and Walgreens locations do not stock bacteriostatic water 25 packs on the shelf. You usually need to order it through a compounding pharmacy, a medical supply distributor, or an online research supplier. Availability varies by state and store.
Is bacteriostatic water 25 pack safe for human use?
Only bacteriostatic water for injection, USP, is intended for human use, and only when a healthcare professional directs it. Research-grade 25 packs are labeled for laboratory use only and are not FDA-approved for human injection. Benzyl alcohol can be harmful in newborns and should not be injected intrathecally.
This page provides educational research information and does not replace medical advice, diagnosis, or treatment.