Answer
The Genuair control window should change from green back to red after inhalation. A click may also be heard, although not everyone hears it.
Sources for this answer
- Duaklir Genuair 340 micrograms /12 micrograms inhalation powder — 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.