Potassium chloride with potassium bicarbonate
This effervescent oral combination supplies potassium chloride together with potassium bicarbonate to correct hypokalaemia, providing potassium with both chloride and an alkalinising bicarbonate component.
Adult dose
Dose adjustments
No numeric renal dose adjustment is printed. §4.4: 'Care should be taken to avoid dosage in excess of requirements for patients with impaired renal function.' §4.3: contraindicated in severe renal impairment with oliguria.
Not stated — no hepatic-impairment statement appears in the retrieved sections.
Dose independently re-sourced from UK Summary of Product Characteristics (SPC) via the eMC; US FDA prescribing information (openFDA / DailyMed) — cross-check; US labelling may differ from UK — clinician-reviewed. Always confirm against the product SmPC and your local formulary before prescribing.
Contraindications
- Hypersensitivity to the active substance or to any of the excipients
- Severe renal impairment with oliguria
- Inadequately treated Addison's disease
- Hyperkalaemia from any cause
- Crush injuries
- Acute dehydration
- Patients with rare hereditary problems of fructose intolerance, glucose-galactose malabsorption or sucrase-isomaltase insufficiency should not take this medicine (§4.4)
Side effects
- Abdominal discomfort, diarrhoea, nausea and vomiting may occur
- Gastric irritation (rare, because the tablets are taken in solution) — give with or after food if there are signs of gastric irritation
- Moderate hyperkalaemia may be asymptomatic — if suspected, refer to the overdosage section
Interactions
- Potassium-sparing diuretics and ACE inhibitors — the risk of hyperkalaemia must be considered (§4.4, §4.5)
- Cardiac glycosides / digitalis — periodic evaluation of clinical status, serum electrolytes and ECG is particularly important (§4.4)
- Hypertension — correction of hypokalaemia may lower blood pressure (§4.4)
Monitoring
- Periodic evaluation of clinical status, serum electrolytes and the ECG when replacement therapy is undertaken — particularly in cardiac disease and in those receiving digitalis (§4.4)
- Serum electrolytes and acid-base studies to regulate the dose in severe hypokalaemia (§4.2)
- Acid-base balance in patients with acidosis (§4.4)
- Blood pressure in hypertensive patients, since correcting hypokalaemia may lower blood pressure (§4.4)
- Elderly patients should be carefully supervised (§4.2)
Clinical monograph
How it works
Potassium chloride replaces potassium and chloride, while potassium bicarbonate adds further potassium and a bicarbonate buffer, making the preparation useful where hypokalaemia coexists with a tendency to acidosis rather than alkalosis.
Prescribing in practice
- Use cautiously in renal impairment and with potassium-sparing diuretics or RAS inhibitors because excess potassium intake can precipitate dangerous hyperkalaemia; the added bicarbonate also makes it unsuitable where alkalosis is present.
- Dissolve the effervescent tablets fully in water before drinking to reduce gastrointestinal irritation.
- The bicarbonate content can alter urinary pH and the handling of some other drugs, so consider interactions.
Monitoring
Monitor serum potassium, chloride, bicarbonate and renal function during supplementation.
Counselling the patient
- Dissolve each tablet completely in water and drink once the fizzing stops.
- Report palpitations, weakness or tingling, and attend for potassium blood tests.
Evidence & guidelines
Established formulary practice and current prescribing references support such combined potassium salts for oral replacement, with the SPC defining the chloride-plus-bicarbonate niche.
Reference: Confirm identity and dosing against the manufacturer SPC (eMC) and NICE. Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).
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