GDUFA Research Outcomes
Complex Routes of Delivery
The Generic Drug User Fee Amendments (GDUFA) science and research program facilitates patient access to high-quality generic drugs by advancing research in areas where generic product development has been limited or prevented due to knowledge gaps about the kind of evidence needed to demonstrate that a generic product is the same as its brand name reference listed drug product. Leaders and experts across the generic industry collaborate to establish GDUFA research priorities for the most pressing scientific challenges they face with generic product development. Scientists and clinicians from industry, academia, and the U.S. Food and Drug Administration (FDA) strategically design research in these areas so that the outcomes help to build scientific bridges across the knowledge gaps, thereby facilitating pharmaceutical manufacturers to develop generic drugs that were previously challenging or unfeasible to develop.
A major GDUFA science and research priority is to enhance the efficiency of bioequivalence (BE) approaches for complex routes of delivery, such as locally-acting gastrointestinal (GI), buccal, sublingual, inhalation, nasal, ophthalmic, otic, and topical dermatological, vaginal and rectal products. The advancement of research in this area focuses on understanding of how ingredients and other aspects of a formulation influence drug absorption via complex routes of delivery, building in vivo predictive models and identifying corresponding failure modes for BE, to support the development of efficient BE approaches for these products.
Outcomes including scientific publications, presentations, and posters arising from GDUFA-funded research in this priority area are available in this section.
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Comparative Analyses: Device and User Interface Considerations
Witzmann, Kimberly
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Generic Drug Development for Respiratory Products: US Food and Drug Administration Update
Witzmann, Kimberly
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Critical Importance of Excipients in Generic Product Development- Now and in the Future
Witzmann, Kimberly
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Overview of Regulatory and User-Interface Considerations, and the Role of Comparative Analyses, in Developing a Generic Drug-Device Combination Product in an ANDA
Witzmann, Kimberly
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Generic Drug Development For Respiratory Products, US Food And Drug Administration Update
Witzmann, Kimberly
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The Role of Comparative Analyses for Evaluation of Generic Drug-Device Combinations in an ANDA
Witzmann, Kimberly
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Overcoming Barriers to Entry for Complex Generic Oral Inhalation Drug Products
Witzmann, Kimberly
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Predictive Dissolution Methods fro OINDPs
Witzmann, Kimberly
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Impact of Excipients on Inhalation Products
Witzmann, Kimberly
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The Pursuit of Alternative Methodologies for Demonstrating Bioequivalence for Generic Topical Dermatologic Drug Products
Wilkin, Jonathan