Answer
Rinsing reduces medicine left in the mouth and lowers the risk of oral thrush and throat effects.
Sources for this answer
- Symbicort Turbohaler 100/6, Inhalation powder. — 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.