A synthetic, nonabsorbable compound insoluble in water.
Urinary calcium is decreased while urinary phosphorus and oxalate are increased.
Decrease incidence of new renal stone formation in absorptive hypercalciuria Type I. Diagnostic test for causes of hypercalciuria other than hyperabsorption. Children under age 16. Long-term use may cause hyperoxaluria and hypomagnesiuria. 5 g with each meal. 2.5 g with breakfast and lunch and 5 g with dinner.