Advantages of the dry powder inhaler (DPI) drug delivery systems include which of the following?
1) Low relative cost
2) No propellants required
3) No hand-breath coordination necessary
4) Unaffected by humidity
A) 1 and 3 only
B) 1, 2, and 3 only
C) 3 and 4 only
D) 2, 3, and 4 only
Correct Answer:
Verified
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