Since 1999, RX Vitamins has led the way in developing veterinarian-approved supplements, enhancing pet health and well-being. Committed to the highest standards of safety and efficacy, our brand is trusted in pet care, providing professional-grade cat nutritional supplements. Rx Vitamins Renal Feline features milk thistle cats, hawthorn berry extract, and astragalus supplement to support overall kidney support for cats . Rx Renal Feline is a complex formulation of multiple botanical extracts and nutraceuticals that is designed to support normal kidney function in feline patients. Whether you need a senior cat supplement or a kitten supplement, this may help aid UTI for cats and other related kidney issues. If your veterinarian has said you need a cat kidney support supplement, check out Rx Vitamins Rx Renal Feline.