Answer
Clozapine must not be combined with sulfadiazine. Warfarin, pyrimethamine, methotrexate, phenytoin, ciclosporin, sulfonylureas, methenamine and some anaesthetics also require review.
Sources for this answer
- Sulfadiazine 500mg Tablets BP — 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.