Answer
It is an antifungal. It treats susceptible fungi and yeasts rather than bacterial infections.
Sources for this answer
- Nystatin 100,000 units/ml Oral Suspension (Ready-Mixed) — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.