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1 May 2026Oral drugs

Potassium chloride sustained-release oral

Sustained-release potassium chloride guidance for diuretic-induced hypokalaemia during longer-term replacement.

Prescription under medical supervision
This guide page is for structured reference only and does not replace a clinician, pharmacist, or emergency review. Dose choice, route choice, interactions, and safety decisions still need professional judgment.

Therapeutic action

Potassium supplement.

Indications

Hypokalaemia induced by thiazide diuretics such as hydrochlorothiazide and loop diuretics such as furosemide.

Forms and strengths

  • 600 mg potassium chloride sustained-release tablet providing 8 mmol of potassium.

Dose

Do not exceed indicated doses if potassium serum levels cannot be measured.

  • Adult: 15 to 25 mmol daily, corresponding to 1 tablet 2 to 3 times daily.

Duration

According to clinical response and duration of diuretic treatment.

Contra-indications, adverse effects, precautions

  • Administer with caution and reduce dosage in elderly patients and patients with renal impairment because of the risk of hyperkalaemia.
  • Do not combine with spironolactone and angiotensin-converting-enzyme inhibitors such as enalapril.
  • May cause hyperkalaemia, gastroduodenal ulcerations, diarrhoea, nausea, and vomiting.
  • Pregnancy: no contra-indication.
  • Breast-feeding: no contra-indication.
  • Take with or at the end of meals to reduce the risk of gastrointestinal ulcerations.

Source

MSF Essential drugs practical guidelines (January 2026)

This page reproduces the structured reference information for this batch while leaving out the Storage and Remarks sections.

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