Page 233 - Pharmaceutics IV (02-06-01305)
P. 233

30/03/2024

    Formulation Development

                                   Dosage form
                    Factors affecting drug absorption

                        Formulation considerations

                                             Physiological

                                             Pharmaceutical

                       Dr ALyaa Ramadan, AU                                              41

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      Physiological effects

    - Drug metabolism in the respiratory tract &
        reduction of systemic effect

    - Protein binding

    - Mucociliary transport causing increased or
        decreased drug residence time

    • Local toxic effects of the drug

    Eg., edema, cell injury, or altered tissue defenses

    • Local or systemic effects of propellants,                                          42
        preservatives, or carriers

                                                                   Dr ALyaa Ramadan, AU

42

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