It was supposed to be to help
with kidney function, but she seems to be doing fine
with just the food. All of her stats are in the normal range except for her creatinine, which was 2.8 at last reading and it had come down from 3.1. She has had her blood pressure checked twice, and they were both in the high-normal range at the vet's office, so they said she probably has normal blood pressure when she is at home and not in a high-stress situation, like at the vet.