D-Tagatose is widely used as a low-calorie sweetener in the food and beverage industry. It provides a sweet taste with about 92% of the sweetness of sucrose but with significantly fewer calories, making it suitable for diabetic and weight management products. It is also used in dairy products, baked goods, and cereals to enhance flavor without adding excessive sugar.

In the pharmaceutical sector, D-Tagatose is utilized as an excipient in drug formulations and has shown potential in managing blood glucose levels, making it beneficial for individuals with type 2 diabetes. Its prebiotic properties promote gut health by stimulating the growth of beneficial bacteria in the intestines.

Additionally, D-Tagatose is employed in oral care products like toothpaste and mouthwash due to its non-cariogenic nature, which means it does not contribute to tooth decay. Its versatility and health benefits make it a valuable ingredient in various industries.