Sodium cellulose phosphate (SCP) is an insoluble, non-absorbable ester of cellulose
containing 34% inorganic phosphate and 11% sodium. It is capable of binding
calcium in the intestinal tract, reducing absorption of this ion, as well as
magnesium. SCP is indicated only for the treatment of absorptive hypercalciuria
type I with recurrent calcium oxalate or calcium phosphate nephrolithiasis.