Answer
Severe renal failure is a contraindication. Lesser impairment requires prescriber review because sulfadiazine is cleared through the kidneys and can cause urinary crystals.
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.