← All medications

Potassium chloride

Medication electrolyte replacement other
Aka: Slow-K, KCl
Brands seen in Singapore: Potassium Chloride Tablets (Slow-Release) 600 mg, Potassium Chloride Mixture 500 mg/5 ml
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Prescribed to treat or prevent low potassium levels
When to take
HealthHub: with or after food, as the doctor prescribed
Take with
A full glass of water · tablets swallowed whole
Pros & cons
Pros
  • FDA label: for when diet alone is not enough
  • HealthHub: the slow-release tablet spreads the dose
  • FDA label: liquid potassium suits swallowing trouble
Cons
  • FDA label: solid forms can ulcerate the gut lining
  • HealthHub: stomach discomfort, diarrhoea, nausea
  • HealthHub: high potassium can upset heart rhythm
Sources
  1. HSA — Listing of Registered Therapeutic Products (data.gov.sg open dataset, 5,511 rows, cached in full and filtered locally) · read 2026-08-27
    what it says
    “Both single-ingredient oral potassium chloride products read Forensicclassification 'Prescription Only' — SIN07447P POTASSIUM CHLORIDE TABLETS (SLOW-RELEASE) 600 mg (YELLOW) and SIN08437P POTASSIUM CHLORIDE MIXTURE 500 mg/5 ml, both Beacons Pharmaceuticals. No product named Slow-K is registered.”
  2. HealthHub (Pharmaceutical Society of Singapore) — Potassium Chloride: what is this medication for · read 2026-08-27
    what it says
    “This medication is used to treat or prevent low potassium levels in the body by increasing the amount of potassium in the body.”
  3. HealthHub — Potassium Chloride: how should I take or use this medication · read 2026-08-27
    what it says
    “Take this medication as prescribed by your healthcare professional … This medication must be taken with or after food … Swallow the tablet whole with a full glass of water … Do not crush, chew or suck the tablet”
  4. HealthHub — Potassium Chloride: precautions · read 2026-08-27
    what it says
    “You have ever been diagnosed with metabolic acidosis … Certain medications that lower blood pressure such as Lisinopril, Enalapril … Losartan, Valsartan … Certain medications that remove excess water from your body such as Spironolactone, Eplerenone, Triamterene or Amiloride”
  5. HealthHub — Potassium Chloride: common side effects · read 2026-08-27
    what it says
    “Some side effects include stomach discomfort, diarrhoea, nausea or vomiting. You may reduce the stomach discomfort by taking medication with or after food”
  6. HealthHub — Potassium Chloride: rare but serious side effects · read 2026-08-27
    what it says
    “The symptoms of high potassium levels in your blood include: Difficulty breathing; Irregular heartbeat; Chest pain; Feeling tired or weak; Nausea or vomiting; Muscle weakness”
  7. HealthHub — Potassium Chloride: what food or medication should I avoid · read 2026-08-27
    what it says
    “Do not use salt substitutes or consume low-sodium food products unless your doctor has advised you to do so, as these products may contain potassium. Check the labels carefully on all low-sodium food products”
  8. US FDA label for KLOR-CON (potassium chloride extended-release tablets), section 1 Indications and Usage, via openFDA (effective 2025-07-14) · read 2026-08-27
    what it says
    “indicated for the treatment and prophylaxis of hypokalemia with or without metabolic alkalosis, in patients for whom dietary management with potassium-rich foods or diuretic dose reduction is insufficient”
  9. US FDA label for KLOR-CON, section 2 Dosage and Administration, via openFDA · read 2026-08-27
    what it says
    “Dosages greater than 40 mEq per day should be divided such that no more than 40 mEq is given in a single dose. Treatment of Hypokalemia: Typical dose range is 40 to 100 mEq per day.”
  10. US FDA label for KLOR-CON, section 5.1 Gastrointestinal Adverse Reactions, via openFDA · read 2026-08-27
    what it says
    “Solid oral dosage forms of potassium chloride can produce ulcerative and/or stenotic lesions of the gastrointestinal tract … Consider the use of liquid potassium in patients with dysphagia, swallowing disorders, or severe gastrointestinal motility disorders.”
  11. US FDA label for KLOR-CON, section 4 Contraindications, via openFDA · read 2026-08-27
    what it says
    “Potassium chloride is contraindicated in patients on triamterene and amiloride.”
  12. US FDA label for KLOR-CON, section 7 Drug Interactions, via openFDA · read 2026-08-27
    what it says
    “Drugs that inhibit the renin-angiotensin-aldosterone system (RAAS) including angiotensin converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), spironolactone, eplerenone, or aliskiren produce potassium retention … NSAIDs may produce potassium retention”
Report a correction View as JSON

Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.