Bacteriostatic Water for Injection 10 mL (USP)

Essential for Peptides, HGH, and HCG

Bacteriostatic Water (Bac Water) is the industry standard for reconstituting lyophilized (powdered) compounds such as Peptides, HGH, and HCG. Unlike regular sterile water, Bac Water contains 0.9% benzyl alcohol, which keeps the solution sterile for up to 28 days after opening.

This allows for multiple uses from a single vial, making it the safest and most cost-effective choice for your reconstitution needs.

Key Benefits:

• Medical Grade Sterility: USP/EP grade with 0.9% benzyl alcohol.
• Multi-Use Safe: Preservative allows the vial to be used multiple times for up to 28 days.
• Perfect for Reconstitution: Ideal for mixing HGH, HCG, Melanotan 2, BPC-157, and other peptides.
• Prevents Bacteria Growth: Keeps your compounds safe and infection-free.

Usage:

• Reconstitution: Use a sterile syringe to withdraw the desired amount of Bac Water and inject it slowly into your peptide/HGH vial. Swirl gently (do not shake) to dissolve.

1. Description: Clinical summary

Bacteriostatic Water 10 mL (Bacteriostatic Water for Injection) is a sterile, aqueous diluent containing a low concentration of benzyl alcohol (commonly 0.9% w/v) as a bacteriostatic preservative. It is supplied in sealed glass vials and is intended for reconstitution or dilution of drugs and biologics prior to parenteral administration. Because the benzyl alcohol inhibits growth of bacteria introduced into the vial, the product is frequently used as a multi‑dose diluent for medications that will be withdrawn more than once from the same vial. Bacteriostatic water is not a therapeutic agent; it is a sterile vehicle that facilitates accurate preparation and administration of injectable drugs.

Typical labelled uses:

• Reconstitution of powdered medications (e.g., many injectable peptides, vaccines, and antibiotics) where a bacteriostatic diluent is permitted.
• Diluting injectable products for subcutaneous or intramuscular administration when compatible.
  Always follow the specific drug manufacturer’s prescribing information and hospital pharmacy guidance for compatibility, route, and storage after reconstitution.

2. How does Bacteriostatic Water 10 ml work?

Bacteriostatic water works as a sterile diluent; its antimicrobial effect is due to the benzyl alcohol preservative:

• Benzyl alcohol exerts bacteriostatic activity by disrupting bacterial cell membranes and interfering with essential cellular functions, preventing bacterial replication in the vial after puncture.
• It does not sterilize contaminated solutions nor does it kill all organisms (bactericidal). It prevents growth sufficient to allow multiple withdrawals from the vial under proper aseptic technique.
• The water itself provides an isotonic vehicle for dissolving or diluting injectable drug products; it does not contribute pharmacologic effect to the patient.

3. Dosage: Medical and varying usage guidelines

Bacteriostatic water is a diluent, not a doseable medication. “Dosage” refers to appropriate volumes and handling for reconstitution/dilution and administration:

General principles

• Use only as a diluent when the drug’s labeling or pharmacy policy allows benzyl alcohol–containing diluents. If labeling requires preservative‑free sterile water, do not use bacteriostatic water.
• Determine required reconstitution volume from the drug manufacturer’s instructions (e.g., dissolve 1 mg of lyophilized drug in X mL). The total amount drawn from the bacteriostatic vial depends on that required volume.
• Use aseptic technique for each puncture. Use a sterile syringe and needle for each access. Avoid contaminating the rubber stopper.
• Gently swirl to dissolve; do not shake vigorously unless the drug label permits (some proteins/peptides are shear‑sensitive).

Multi‑use handling

• Many commercially available bacteriostatic water vials are labeled for multiple withdrawals and recommend discarding 28 days after first entry (follow the manufacturer’s label and institutional policies).
• Label vial after first use with date/time/initials and discard date.
• If vial solution becomes cloudy, discolored, or particulate is evident, discard it.

Routes and injection technique

• Bacteriostatic water is commonly used to prepare solutions for subcutaneous (SC) or intramuscular (IM) administration and may be used for intravenous (IV) injection/infusion only if the drug product is compatible and the manufacturer permits benzyl alcohol. Do not assume all products are compatible.
• Typical procedural guidance (not specific drug dosing): use an appropriate gauge needle for withdrawal (e.g., 18–22G) and a finer needle for SC injections (e.g., 25–30G). For IM injections, use appropriate needle length and gauge for patient size and site.
• Rotate injection sites and follow standard injection-site care.

Special populations and contraindications (dose‑related safety concerns)

• Neonates and infants: Bacteriostatic water containing benzyl alcohol is contraindicated in newborns and preterm infants and generally advised against in infants under 2 months of age because benzyl alcohol has been associated with “gasping syndrome” (severe toxicity, metabolic acidosis, neurologic deterioration and death).
• Pregnancy and breastfeeding: Use only if clearly indicated and if the drug product labeling permits; consult obstetric/teratology resources and pharmacy.
• Intrathecal/intraventricular administration: Avoid — benzyl alcohol is not intended for intrathecal or intraventricular use because of potential neurotoxicity.
• Ophthalmic use: Not indicated unless specifically labeled for ophthalmic administration.

If in doubt about compatibility, route, or patient‑group suitability, consult the drug manufacturer’s prescribing information or a pharmacist before using bacteriostatic water.

4. Side effects: Common and rare adverse effects

Local and procedural reactions

• Local pain, irritation, erythema or transient swelling at injection site (usually attributable to the drug being injected more than to the diluent).
• Minor systemic reactions such as transient dizziness or lightheadedness immediately after injection.

Preservative (benzyl alcohol)–related adverse effects

• Hypersensitivity/allergic reaction to benzyl alcohol: rash, urticaria, bronchospasm, angioedema, and in rare cases anaphylaxis.
• Systemic benzyl alcohol toxicity (most concerning with high cumulative doses or sensitive populations):
  • “Gasping syndrome” in neonates and preterm infants: metabolic acidosis, neurologic depression, respiratory distress, hypotension, cardiovascular collapse; can be fatal.
  • In older children and adults, very large amounts may cause central nervous system depression, metabolic disturbances, and gastrointestinal symptoms, though this is uncommon with normal clinical use.
• Neurotoxicity risk if used intrathecally or intraventricularly (avoid these routes).

Other risks

• Infection or sepsis if aseptic technique is not maintained and contaminated material is injected.
• Administration errors if used in place of preservative‑free sterile water when that is required.

What to do if adverse effects occur

• For local allergic reactions: stop administration, remove remaining drug if possible, treat with appropriate symptomatic therapy (antihistamines, corticosteroids) and seek medical care.
• For severe systemic reactions (anaphylaxis, respiratory compromise, hypotension): call emergency services, administer intramuscular epinephrine and supportive measures per ACLS/ATLS protocols.
• For suspected benzyl alcohol toxicity (especially in neonates): provide supportive care and urgent medical evaluation; notify poison control and consult pediatrics/intensive care.

5. Storage: HOW to store it

• Store at controlled room temperature (commonly 20–25 °C or 68–77 °F) unless manufacturer specifies a different range. Avoid excessive heat and avoid freezing.
• Protect from direct sunlight and extremes of temperature.
• Keep the vial tightly closed until use.
• Use aseptic technique when withdrawing product. After initial puncture, follow the vial’s label for allowable period of multi‑use (many are labeled for up to 28 days after first use); if no multi‑use guidance is provided, follow institutional policy or discard after a single use.
• Discard the vial immediately if:
  • The solution is cloudy, discolored, or contains particulate matter.
  • The stopper is damaged or the seal is broken.
  • The recommended time window after first use has passed.
• Keep out of reach of children and pets.
• Dispose of used vials and needles safely in appropriate sharps and pharmaceutical waste containers in accordance with local regulations.

Final notes

• Always confirm compatibility of bacteriostatic water with the specific drug and the intended route of administration before use.
• Do not substitute bacteriostatic water for preservative‑free sterile water when a drug label or institutional protocol requires preservative‑free diluent (e.g., for neonates, intrathecal use, or certain ophthalmic preparations).
• For clinical questions about reconstitution volumes, dosing of active medications, or management of adverse events, consult the drug prescribing information and your pharmacy or clinical toxicology resources.