Advantages and Disadvantages Metered Dose Inhaler (MDI)
Advantages:
- Accurate dose
- More than 100 doses in a single can
- Drug preparation is not required
- Short delivery time
- Very first effect
Disadvantages:
- Drug delivery depends on good inhaler technique
- Have a chance of oropharyngeal deposition
- Assembly and cleaning issue
- Difficult to determine remaining doses
- Device variation
Advantages and Disadvantages Dry Powder Inhaler (DPI)
Advantages:
- Propellant free
- Portable
- Less patient coordination is required
Disadvantages:
- Require drug preparation
- Inspiratory flow dependent
- Moisture and heat sensitivity
- Device variation
- Expensive compare to MDI
Difference between Metered Dose Inhaler and Dry Powder Inhaler
- MDI is propellant based, where DPI is Lactose based (No liquid used)
- DPI is more expensive compare to MDI
- Comparatively more patient awareness need for MDI
Read Also: CPP & CQA for MDI & DPI
