Hill’s Prescription Diet u/d Urinary Care Canine 4kgHills Prescription Diet u d Urinary Care Canine 4kg Hills PRESCRIPTION DIET u d Dog Food is a complete dietetic pet food for reduction of urate stones formation, reduction of cystine stones formation and reduction of copper in liver in adult dogs. This food contains a moderate level of sulphur amino acids, a low level of purines, a low level of protein but of high quality, a selected protein source, a restricted level of copper and also has urine