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Factors Affecting Development Of Dry Powder Inhalers

Author(s): S.P Shah, S Ganesh, A.N Misra

The search for alternatives to metered-dose inhalers has driven impetus for finding effective products that do not use chlorofluorocarbon propellants. The purpose of this paper review is t o address the factors to be considered in developing dry powder inhalers; particularly the formulation, metering design and flow path in the device and importance of various regulatory requirements are discussed. The advantages and disadvantages of current dry powder inhalers and future approaches for pulmonary drug delivery are also discussed.


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