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Published on: March 18, 2019
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An Exploration of Dissolution Tests for Inhalation Aerosols
Min Wang1, Zhaoying Fang2,3, Kunhao Yang2,3
1School of Pharmacy, Shandong University of Traditional Chinese Medicine, Shandong, China.
AAPS Pharmscitech
|October 1, 2024
Summary
A new dissolution method for inhalation aerosols was developed. It shows that actuator orifice size impacts drug dissolution, offering insights into inhaled corticosteroid behavior.
Area of Science:
- Pharmaceutical Sciences
- Drug Delivery Systems
- Aerosol Science
Background:
- Developing effective dissolution methods for inhalation aerosols is crucial for drug performance assessment.
- Characterizing fine particle dose and its dissolution is key for inhaled medications.
Purpose of the Study:
- To establish a feasible dissolution method for inhalation aerosols.
- To investigate the impact of actuator orifice size on drug dissolution behavior.
Main Methods:
- A novel fine particle collection method was used for aerosol particles < 4 μm.
- Budesonide was used as a model drug in meter-dose inhaler (MDI) studies.
- Dissolution tests and Weibull modeling were performed on collected fine particle doses.
Main Results:
- The fine particle dose decreased as actuator orifice size increased.
- Different actuator orifice sizes significantly affected drug dissolution profiles.
- The developed method demonstrated discriminative capacity via f2 analysis.
Conclusions:
- The established dissolution method is simple, reproducible, and suitable for inhalation aerosols.
- Actuator orifice size is a critical factor influencing inhaled drug dissolution.
- This method can explore the relationship between actuator design and inhaled corticosteroid dissolution.
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