Answer
Reduced kidney function can allow potassium to accumulate. Severe renal failure with little urine production is a contraindication to the selected syrup; other impairment requires careful assessment and monitoring.
Sources for this answer
- Potassium Chloride 7.5% w/v Syrup — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.