Answer
Yes. It can prolong the QT interval and rarely cause dangerous arrhythmias, particularly when cardiac, electrolyte or interacting-medicine risks are present.
Sources for this answer
- Sulpiride Grindeks 200 mg tablets — Current selected SmPCemc · Summary of Product Characteristics
- Sulpiride 200mg/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.