Page 264 - Pharmaceutics IV (02-06-01305)
P. 264
3/30/24
Why some aerosol product must be
used inverted and the other up-right?
Upright
aerosol
Dip tube?
HCs are lighter than water, therefore form the upper layer
CFCs are denser than water, therefore form the lower layer
the dip tube should be short andPoronflAylyraea aRcamhadthane, cpeurtoicds,uAcUt phase and not reach the lower
propellant phase .
35
Advantages of MDI
Small size Convenient Multi-dose
transport
Low cost Quite high resistance High reliability
to damage related to
its use and external
conditions
Easy
application of
the drug
Prof Alyaa Ramadan, ceutics, AU
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