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Spray freeze-drying for inhalation application: process and formulation variables
Mostafa Rostamnezhad1, Hossein Jafari2, Farzad Moradikhah3
1Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
Pharmaceutical Development and Technology
|December 22, 2021
Summary
Spray freeze-drying (SFD) creates porous pharmaceutical particles with excellent flow. This method enhances drug solubility and is crucial for effective pulmonary drug delivery systems.
Area of Science:
- Pharmaceutical Technology
- Materials Science
- Drug Delivery
Background:
- Particle engineering is vital for pharmaceutical products, especially inhaled medications.
- Spray freeze-drying (SFD) is a key technique for developing particles with desirable aerodynamic properties.
Purpose of the Study:
- To provide a comprehensive overview of the spray freeze-drying method.
- To summarize excipients, particle properties, and recent advancements in SFD for pharmaceutical applications.
Main Methods:
- Review of various spray freeze-drying techniques.
- Analysis of excipients used in SFD.
- Characterization of particles produced by SFD.
Main Results:
- SFD produces spherical particles with high porosity and low density.
- This technique improves the solubility and efficacy of pharmaceutical formulations.
- Optimized SFD processes yield desirable outcomes for inhaled products.
Conclusions:
- Spray freeze-drying is an efficient method for creating advanced pharmaceutical particles.
- SFD holds significant potential for advancing pulmonary drug delivery.
- Further model-based optimization can enhance SFD applications.
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