MDI with Spacer
Metered dose inhalers, or MDIs, spray out a puff of medicine into the spacer. The medicine is then inhaled from the spacer deep into the lungs.
MDI with Spacer and Mask
For younger children, an MDI is best used with a spacer that includes a mask, which fits over their nose and mouth.
Diskus
A diskus inhaler delivers medication in the form of a dry powder, which is inhaled deep into the lungs.