Westend Medical Supplys Preservative Emphasis: Westend Medical Supply highlights the benefits of benzyl alcohol, which extends vial usability for up to 28 days after opening
Independent testing and MHRA enforcement activity (including Operation Pangea) have found that many such products contain incorrect concentrations, impurities, or in some cases entirely different substances to those labelled
The technique is learnable, but the decisions around it (do you actually need it, what dose, how often, and is something else being missed) are medical judgements, and getting them wrong carries real cost
Forum threads generally land on the same 28-day figure, though the recurring argument is whether that number is real or arbitrary
Neonates: Bacteriostatic Water for Injection is contraindicated in neonates (newborn infants), especially premature infants