Answer
Yes. It can worsen an existing rhythm problem or cause a new one, particularly with low potassium, structural heart disease or interacting medicines.
Sources for this answer
- Disopyramide Neon 250 mg Prolonged-Release Tablets — 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.