★Children 2-5 years old: dosing aerosol + storage canister For younger children, they may not be able to effectively use some inhalation devices suitable for adult asthma treatment, but don’t worry, the Global Asthma Control Initiative guidelines recommend: dosing aerosol + storage canister for asthma treatment in children <4 years old, which can help the medication enter the lungs better, increase the efficacy and reduce side effects. ★ Dry powder inhalation device ★ Quasi-sodium device and DuPont are suitable for children aged 5 years and above.