To add, “c/d” most often refers to Hill’s Prescription Diet c/d Multicare, which is specifically formulated to support urinary tract health and help prevent certain types of bladder stones, not digestive issues. If your cat has chronic digestive concerns, you’d want to look at diets formulated for gastrointestinal health rather then urinary health. Always consult your vet before switching to a prescription or therapeutic food, as these formulas target very specific health problems and could be inappropriate—or even harmful—for other conditions.