This study is for kids aged 12-17 with asthma. It will test how well a medicine called Fluticasone Furoate (FF)/Umeclidinium (UMEC)/Vilanterol (VI) helps their lungs after 24 weeks compared to another medicine, FF/VI. Asthma is a condition where breathing can be difficult because airways are swollen. The study will check if the new medicine makes breathing easier and if it is safe to use.
Key Points:
- The study lasts for 24 weeks (about 6 months).
- Participants must already be taking asthma medicine and be stable for 6 weeks before the study.
- Participants cannot join if they had serious asthma issues or lung problems recently.