[Effect of nifedipine on kidney output of calcium, oxalic acid, and saturation of urinary calcium oxalate].

The study involved 30 patients treated with nifedipine in daily dose of 30 mg for 7 days. Calcium, magnesium, phosphate, oxalate, and uric acid levels in the urine were measured. It was found that nifedipine significantly decreased oxaluria urinary excretion of calcium, magnesium, phosphate, and uric acid remained unchanged following nifedipine therapy. Results may suggest that nifedipine may exert an influence on renal stone formation.