Answer
It can temporarily reduce sperm count and movement. This usually reverses after treatment is stopped, but any change should be planned with the specialist to avoid a disease flare.
Sources for this answer
- NHSNHS · NHS medicine guidance
- Sulfasalazine 500 mg gastro-resistant 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.