SPL Set ID: 905c3ee5-d1a7-4deb-a345-4a42296704fa

Sodium polystyrene sulfonate, USP is a benzene, diethenyl-polymer, with ethenylbenzene, sulfonated, sodium salt and has the following structural formula: The drug is a cream to light brown finely ground, powdered form of sodium polystyrene sulfonate, a cation-exchange resin prepared in the sodium phase with an in vitro exchange capacity of approximately 3.1 mEq ( in vivo approximately 1 mEq) of potassium per gram. The sodium content is approximately 100 mg (4.1 mEq) per gram of the drug. It can be administered orally or rectally as an enema. One gram of sodium polystyrene sulfonate, USP contains 4.1 mEq of sodium. Chemical Structure