The Hill's Prescription Diet b/d is for aging dogs with issues like defecating in the house, irregular sleep patterns, memory loss, and reduced social interaction. The dry dog food is clinically proven to provide the nutrition your dog needs for reducing age-related behaviors and decline. The prescription diet food provides all the nutrition to support learning ability and memory in adult dogs. This prescription dog food is a complete and balanced food containing elevated levels of omega 3 fatty acids, protein, phosphorus, sodium, and antioxidants. The composition supports a healthy immune system, as well as heart and kidney function.