About Calcium Polystyrene Sulphonate 93.5% W/W
Potassium-binding ion-exchange resin
Used for
- Treats high blood potassium levels by binding potassium in the gut.
Usual adult dose
Typically 15 g by mouth three or four times daily; adjusted according to blood potassium.
Usual dose in children
Typically 1 g/kg by mouth daily in divided doses; specialist supervision and blood-test-guided adjustment are needed.
Common side effects
- Constipation, nausea, or loss of appetite
- Low blood potassium, calcium, or magnesium
- High blood calcium
- Rarely, serious bowel injury or blockage
Important warnings
- Not for emergency treatment of dangerously high potassium; it works slowly.
- Avoid with bowel obstruction, severe constipation, or reduced bowel movement.
- Can cause calcium levels to rise and potassium levels to fall.
- Separate other oral medicines by at least three hours, when possible.
Pregnancy
May be used when needed under medical supervision; discuss risks and benefits with a clinician.
Breastfeeding
Not expected to pass into breast milk because it is not absorbed; clinical advice is appropriate.
Interactions
- May reduce absorption of other oral medicines; separate doses.
- Sorbitol increases the risk of serious bowel injury.
- May increase calcium absorption with vitamin D supplements.
- May worsen electrolyte changes with other potassium-lowering medicines.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.