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Optimization of Carrier-Based Dry Powder Inhaler Performance: A Review
Tanu Mehta1, Saeed Najafian1,2, Komalkumar Patel3
1Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA.
Dry powder inhalers (DPIs) use carrier-based formulations for effective pulmonary drug delivery. Formulation components, device design, and manufacturing processes significantly impact DPI aerosol performance.
Area of Science:
- Pharmaceutical Sciences
- Drug Delivery
- Materials Science
Background:
- Dry powder inhalers (DPIs) are gaining popularity for pulmonary drug delivery.
- Achieving optimal aerosol performance requires careful control over formulation and manufacturing processes.
Purpose of the Study:
- To review factors influencing the aerosol performance of carrier-based DPIs.
- To discuss formulation components, device considerations, and manufacturing parameters impacting DPI efficacy.
Main Methods:
- Review of scientific literature on DPI formulation and manufacturing.
- Analysis of factors affecting aerosolization of micronized active pharmaceutical ingredients (APIs) with carriers.
Main Results:
- API particle size (1-5 μm) is critical for deep lung delivery but leads to poor flowability.
- Carrier-based formulations improve powder flowability for DPIs.
- Formulation components (e.g., lactose, magnesium stearate) and manufacturing steps (e.g., micronization, blending) critically affect aerosol performance.
Conclusions:
- Optimizing DPI performance necessitates a holistic approach, considering formulation, device, and manufacturing.
- Novel technologies offer potential for enhancing DPI aerosolization and drug delivery efficiency.
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