Answer
Yes. QT prolongation and arrhythmias have been reported, with greater risk from cardiac disease, a slow heart rhythm, low potassium or interacting medicines.
Sources for this answer
- Welldorm Elixir/Chloral Hydrate 143mg/5ml Oral Solution — Current selected SmPCemc · Summary of Product Characteristics
- Chloral Hydrate 500mg/5ml Oral Solution — 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.