Abstract
This paper provides an overview of the environmental and safety concerns associated with benzalkonium chloride (BAC), a chemical widely used in pharmaceuticals. The review covers BAC’s various applications, toxicity, and environmental considerations. It explores the industrial processing of BAC, its role as a preservative in drug formulations, and the negative consequences linked to its usage. Furthermore, the review highlights the potential allergic reactions following the initial application of BAC. The study also refers to the various concentrations of BAC employed in different formulations and their administration for safety purposes. Additionally, initiatives to use alternatives to BAC in order to mitigate the potential side effects are explored.