Potassium chloride is a mineral salt used to replace potassium in the body. Potassium is needed for normal heart rhythm, nerve signals and muscle function.

What Potassium Chloride Is Used For

  • Low blood potassium (hypokalaemia)
  • Potassium loss caused by water tablets (diuretics)
  • Potassium loss from vomiting or diarrhoea
  • Oral rehydration, in combination products

Common Side Effects

  • Nausea or stomach upset
  • Diarrhoea
  • Abdominal discomfort
  • Throat irritation with some liquid forms

Precautions

Too much potassium can be dangerous for the heart. Do not take potassium supplements if you have kidney disease, or use ACE inhibitors, ARBs or potassium-sparing diuretics, unless your doctor has checked your blood levels. Take it with food and plenty of water.

This page is general information only. It is not a substitute for advice from your doctor or pharmacist, and it does not include dosage. Always follow the directions given to you and read the leaflet inside the pack.

Medicines Containing Potassium Chloride