Bacteriostatic Water
Sterile water with preservative (0.9% benzyl alcohol) that prevents bacteria from growing. The standard liquid used to dissolve freeze-dried peptides. The preservative allows safe multi-dose use over multiple days. An essential supply for anyone using injectable peptides — not a therapeutic agent itself.
Dosage
Not applicable — reconstitution supply
Dosages shown are for research reference only. Always consult a qualified healthcare provider.
Administration
Used to dissolve/reconstitute peptides for injection
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Mechanism of Action
Bacteriostatic water is not a therapeutic agent — it is a pharmaceutical preparation of sterile water preserved with 0.9% benzyl alcohol (9 mg/mL). The benzyl alcohol serves as a bacteriostatic preservative, meaning it inhibits bacterial growth and reproduction without necessarily killing all organisms (unlike bactericidal agents).
Benzyl alcohol's antimicrobial mechanism involves disruption of bacterial cell membrane integrity. The lipophilic benzyl group partitions into the phospholipid bilayer of bacterial membranes, disordering the lipid packing and increasing membrane permeability. This compromises the membrane's ability to maintain ion gradients and membrane potential, inhibiting active transport, ATP synthesis, and other membrane-dependent processes essential for bacterial reproduction. At 0.9% concentration, this effect is sufficient to prevent bacterial multiplication in reconstituted peptide solutions, maintaining sterility for the 28-day use period after first puncture.
For peptide reconstitution, bacteriostatic water is preferred over sterile water for injection (SWFI) when multi-dose vials will be used. SWFI lacks preservative and must be used immediately after opening, as a single needle puncture can introduce bacteria that will multiply freely in the absence of preservative. The 0.9% benzyl alcohol in bacteriostatic water prevents this microbial contamination during repeated vial access. The reconstitution technique matters: water should be directed against the vial wall and allowed to run down gently to dissolve the lyophilized peptide cake, rather than sprayed directly onto the powder, which can cause foaming and protein denaturation from the mechanical stress of bubble formation.
Regulatory Status
USP-grade bacteriostatic water is regulated as a pharmaceutical-grade product. Available by prescription or through medical supply companies.
Risks & Safety
Serious
contamination and infection risk with improper sterile technique, benzyl alcohol sensitivity in rare individuals.
Rare
benzyl alcohol toxicity in newborns (not for use in newborns).
Research Papers
13Published: January 28, 2025
AI Summary
This study examines the biocompatibility, osteogenic potential, and effectiveness of polyether ether ketone (PEEK) composites for treating osteonecrosis, seeking to establish a theoretical basis for clinical application. A range of PEEK composite materials, including sulfonated polyether ether ketone (SPEEK), polydopamine-sulfonated polyether ether ketone (SPEEK-PDA), bone-forming peptide-poly-...
Published: November 9, 2024
AI Summary
Microbial contamination annually leads to substantial food resource loss. Effective food packaging can mitigate food contamination and waste, yet conventional materials such as plastics often lack bacteriostatic activity. This study aimed to synthesise FengycinA-M3@bacterial cellulose@polyvinyl alcohol composite hydrogels via dual cross-linking with hydrogen and borate bonding, with the goal of...
Published: June 26, 2023
AI Summary
Low temperature can affect the resistance of pathogenic bacteria to other external stress. The present study was envisaged to assess the tolerance of L. coli O157:H7 to acidic electrolyzed water (AEW) under low temperature stress.
Published: February 2, 2023
AI Summary
Enterococci are regarded as a better indication of faecal pollution in freshwater and marine waters. Their levels in seawater are positively connected with swimming-related gastrointestinal disorders. This study used an Enterococcus-specific polymerase chain reaction (PCR) to characterize the isolates.
Published: February 27, 2023
AI Summary
The present study mainly focused on the effects of the conjugates of PL-dextran produced through the Maillard reaction on the quality and storage stability of chicken gel for 5 days at 4 ℃. According to the results of the texture profile, water retention capacity (WRC), low-field nuclear magnetic resonance (LF NMR), aerobic plate count (APC), and total volatile basic nitrogen (TVBN)...
Published: January 9, 2023
AI Summary
This work aimed to develop a glycerol antimicrobial peptide natural latex film (NRL-GI-AMP film) for the treatment of skin wound infections. The contents of this work mainly include investigating the effect of adding glycerol (GI) and an antimicrobial peptide (AMP) on the physical and chemical properties of natural latex (NRL) and analyzing the cytocompatibility, bacteriostatic activity, and in...
Published: December 25, 2022
AI Summary
Foam packaging with good thermal insulation and antibacterial properties is promising for cold chain delivery to strengthen food safety. This study reports a novel antibacterial foam with thermal insulation templated from bagasse nanocellulose complex particle-stabilised acrylate epoxy soybean oil (AESO) Pickering emulsions. Nanocellulose/nisin complex particles (N-CNFs) were prepared by loadin...
Published: August 7, 2022
AI Summary
To investigate the feasibility of the 3D printed scaffold for periapical bone defects..
Published: July 17, 2022
AI Summary
The therapeutic virtues of honey no longer need to be proven. Honey, which is rich in nutrients, is an excellent nutritional food because of its many properties; however, honey has been diverted from this primary function and used in clinical research. Evidence has shown that honey still possesses unknown properties and some of these aspects have never been addressed.
Published: June 14, 2022
AI Summary
Sulfamethoxazole (SMX) is a widespread broad-spectrum bacteriostatic antibiotic. Its residual is frequently detected in the water and may therefore bioaccumulate in the brain of aquatic organisms via blood circulation. Brain capillaries toxicity is very important for brain development.
Published: January 27, 2022
AI Summary
The nickel (Ni)-chelator dimethylglyoxime (DMG) was found to be bacteriostatic towards Campylobacter jejuni. Supplementation of nickel to DMG-containing media restored bacterial growth, whereas supplementation of cobalt or zinc had no effect on the growth inhibition. Unexpectedly, the combination of millimolar levels of DMG with micromolar levels of copper (Cu) was bactericidal, an effect not s...
Published: July 21, 2021
AI Summary
fruit has long been used in the production of traditional liqueurs. The fruit also displayed scavenging and reducing activity, in vitro. The present study focused on unravelling peripheral and central protective effects, antimicrobial but also anti-COVID-19 properties exerted by the water extract of P.
Published: March 23, 2021
AI Summary
The cytotoxicity of doxorubicin (Dox) and its peptide modifications Z-Gly-Pro-Dox and Boc-Gly-Pro-Dox were studied. Tetrahymena pyriformis was used as a test system, which made it possible, due to the short life cycle and high reproduction rate of ciliates, to trace their response to the effects of toxicants over several generations. It was found that peptide modification of the Dox molecule ma...
Frequently Asked Questions
What is Bacteriostatic Water?
Sterile water with preservative (0.9% benzyl alcohol) that prevents bacteria from growing. The standard liquid used to dissolve freeze-dried peptides. The preservative allows safe multi-dose use over multiple days. An essential supply for anyone using injectable peptides — not a therapeutic agent itself.
What is Bacteriostatic Water used for?
Sterile water with preservative (0.9% benzyl alcohol) that prevents bacteria from growing. The standard liquid used to dissolve freeze-dried peptides. The preservative allows safe multi-dose use over multiple days. An essential supply for anyone using injectable peptides — not a therapeutic agent itself.
What is the dosage for Bacteriostatic Water?
Reconstitution supply: 1-2 mL per peptide vial depending on desired concentration. Inject slowly against the vial wall to avoid denaturing the peptide. Store reconstituted peptides refrigerated. Use within 28 days of opening.
What are the side effects of Bacteriostatic Water?
Serious: contamination and infection risk with improper sterile technique, benzyl alcohol sensitivity in rare individuals. Rare: benzyl alcohol toxicity in newborns (not for use in newborns).
How does Bacteriostatic Water work?
Bacteriostatic water is not a therapeutic agent — it is a pharmaceutical preparation of sterile water preserved with 0.9% benzyl alcohol (9 mg/mL). The benzyl alcohol serves as a bacteriostatic preservative, meaning it inhibits bacterial growth and reproduction without necessarily killing all organisms (unlike bactericidal agents). Benzyl alcohol's antimicrobial mechanism involves disruption of bacterial cell membrane integrity. The lipophilic benzyl group partitions into the phospholipid bilayer of bacterial membranes, disordering the lipid packing and increasing membrane permeability. This compromises the membrane's ability to maintain ion gradients and membrane potential, inhibiting active transport, ATP synthesis, and other membrane-dependent processes essential for bacterial reproduction. At 0.9% concentration, this effect is sufficient to prevent bacterial multiplication in reconstituted peptide solutions, maintaining sterility for the 28-day use period after first puncture. For peptide reconstitution, bacteriostatic water is preferred over sterile water for injection (SWFI) when multi-dose vials will be used. SWFI lacks preservative and must be used immediately after opening, as a single needle puncture can introduce bacteria that will multiply freely in the absence of preservative. The 0.9% benzyl alcohol in bacteriostatic water prevents this microbial contamination during repeated vial access. The reconstitution technique matters: water should be directed against the vial wall and allowed to run down gently to dissolve the lyophilized peptide cake, rather than sprayed directly onto the powder, which can cause foaming and protein denaturation from the mechanical stress of bubble formation.
How is Bacteriostatic Water administered?
Bacteriostatic Water is administered via used to dissolve/reconstitute peptides for injection.
What is the half-life of Bacteriostatic Water?
The half-life of Bacteriostatic Water is Not applicable.
Is Bacteriostatic Water legal?
USP-grade bacteriostatic water is regulated as a pharmaceutical-grade product. Available by prescription or through medical supply companies.