Renal Essentials, Pet Wellbeing Kidney Support Gold, Zesty Paws Liver & Kidney Support Supplement, and Wonder Paws Milk Thistle for Dogs are some options to consider for slightly elevated kidney levels. don't forget to have a chat with your vet first before introducing any supplements. They'll have the best advice for your furry friend's specific needs. Good luck, and I hope your dog feels better soon!