IT IS ADMINISTERED BY MOUTH, IN A DOSE OF 15G UP TO
FOUR TIMES DAILY, AS A SUSPENSION IN WATER OR SYRUP OR AS A SWEETENED PASTE. IT SHOULD NOT BE GIVEN IN FRUIT JUICES THAT HAVE A HIGH POTASSIUM CONTENT. A SUGGESTED DOSE FOR CHILDREN IS UP TO I G PER KG BODY-WEIGHT DAILY IN DIVIDED DOSES FOR ACUTE HYPERKALAEMIA, REDUCED TO A MAINTENANCE DOSE OF 500 MG PER KG DAILY IN DIVIDED DOSES; THE ORAL ROUTE IS NOT REC-
OMMENDED FOR NEONATES.
WHEN ORAL ADMINISTRATION IS DIFFICULT, CALCIUM POLYSTYRENE SULPHONATE MAY BE ADMINISTERED RECTALLY AS AN ENEMA. THE USUAL DAILY DOSE IS 30 G GIVEN AS A SUSPENSION IN 100 ML OF 2% METHYLCELLULOSE '450' AND 100 ML OF WATER AND RETAINED, IF POSSIBLE, FOR AT LEAST 9 HOURS. INITIAL THERAPY MAY CONSTITUTE ADMINISTRATION BY BOTH ORAL AND RECTAL ROUTES. FOLLOWING
RETENTION OF THE ENEMA THE COLON SHOULD BE IRRIGATED TO REMOVE THE RESIN. CHILDREN AND NEONATES MAY BE GIVEN RECTAL DOSES SIMILAR TO THOSE SUGGESTED FOR CHILDREN BY MOUTH.