Calcium Polystyrene Sulfonate Sachet is a pharmaceutical agent which is used to remove the excessive amount of potassium present in the blood. It works by swapping the calcium atoms with the potassium inside the large intestine. Its chemical formula is C8H7CaO3S+ with an average molar mass approximately equal to 223.28 grams per mol. This medicine is suitable for every age group and takes different time to show results which depends on the body type, age and the immune system of the patient. Calcium Polystyrene Sulfonate Sachet can be taken orally as per the doctorâs prescription as it is highly reactive and its overdose may result in constipation, diarrhoea, muscle cramps, loss of appetite, gastric irritation, nausea and vomiting.