D-Lactose Monohydrate is widely used in the pharmaceutical industry as an excipient in tablet and capsule formulations. It acts as a filler, binder, and diluent, ensuring uniformity in drug dosage and improving the stability of the final product. In the food industry, it serves as a sweetener and bulking agent in products like baked goods, confectionery, and dairy items. It is also utilized in infant formulas to mimic the nutritional profile of human milk. Additionally, it plays a role in microbiology as a carbon source in culture media for the growth of bacteria and other microorganisms. Its non-hygroscopic nature makes it suitable for applications requiring moisture control.