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 proper dosage and stability of medications. 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 formula as a carbohydrate source, providing essential energy for growth. Additionally, it plays a role in microbiological culture media, supporting the growth of specific microorganisms in laboratory settings. Its non-hygroscopic nature makes it a preferred choice in various industrial applications.