Do you use potassium phosphate for patients with recurrent nephrolithiasis to acidify the urine and prevent certain types of stones?  

Short answer: No. That study was done about 40 years ago, I think by the Kaiser group, and was negative. That said, they used a suboptimal dose of 250 mg bid and measured success by stone passages rather than stone growth. However, studies using neutral phosphates (K Phos Neutral) were done by my m...