Answer
Stop taking it and seek prompt medical advice, particularly for chest pain, painful swallowing, or new or worsening heartburn.
Sources for this answer
- Risedronate sodium 5 mg film-coated tablets — Current selected SmPCemc · Summary of Product Characteristics
- UK GovernmentUK Government · Reputable Web
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.