期刊
DRUG DISCOVERY TODAY
卷 26, 期 10, 页码 2384-2396出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.drudis.2021.04.009
关键词
Leucine; Spray drying; Dry powder inhalers; Particle engineering; Regulatory considerations
Leucine is a promising excipient in the development of inhalable spray-dried powders, enhancing aerosolization and physical stability of particles. Understanding how formulation and processing parameters influence leucine's behavior during drying process is crucial for efficient utilization in dry powder inhaler formulations and other pharmaceutical applications. Insights into the current regulatory status are important for future applications.
Leucine is a promising excipient with several applications in the development of inhalable spray-dried powder of high- and low-dose drugs. The addition of leucine has exhibited significant enhancing effects on the aerosolization and physical stability of the produced particles. Here, we focus not only on the applications of leucine in inhalable spray-drying powders, but also on the underlying mechanisms by which the formulation and processing parameters dictate the behavior of leucine during the drying process and, therefore, its functionalities within the dried powder. Additionally, we highlight the current regulatory status of leucine. Such insights are important for more efficient utilization of leucine in the future, both for dry powder inhaler formulations and other pharmaceutical applications.
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