Milk is safe to drink if you have a UTI. However, yogurt and other fermented dairy products that contain “good” bacteria are better, because they can boost your immune system and prevent infections, decreasing the risk for UTIs.
Dairy products contain high amounts of phosphorus, potassium, and protein and should be limited on a renal diet. Despite milk's high calcium content, its phosphorus content may weaken bones in those with kidney disease.