Hill's Prescription Diet Gastrointestinal Biome is a high-performance pet food designed by veterinarians and nutritionists to support digestive health. The ActivBiome+ technology within the product is a proprietary blend of active fibers that nourish the gut microbiome to promote regular healthy stool and support digestive wellness.

The brand originated in the United States in the late 1930s when Dr. Mark Morris Sr. developed a special diet to help a guide dog with kidney disease. This pioneered the field of clinical pet nutrition. Since 1976, the company has been part of the Colgate-Palmolive family, allowing for global expansion and significant research and development. Today, Hill's is a world leader in therapeutic pet nutrition, with major manufacturing facilities in the United States and specialized production sites in Europe to serve international markets.