Pet-A-Lyte is an oral electrolyte solution that will replace fluids lost from dehydration, vomiting, diarrhea and other illnesses. It is recommended to help maintain hydration by providing the necessary nutrients for animals that cannot eat or drink. Pet-A-Lyte also promotes a faster recovery time to malnourished, working and recovering animals. Both dogs and cats love the tasty chicken flavor. Lasts 30 days after opened when refrigerated.