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Open AccessArticle

Aerosol Characteristics and Physico-Chemical Compatibility of Combivent® (Containing Salbutamol and Ipratropium Bromide) Mixed with Three Other Inhalants: Budesonide, Beclomethasone or N-Acetylcysteine

1
Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
2
School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, Guangdong, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Pharmaceutics 2020, 12(1), 78; https://doi.org/10.3390/pharmaceutics12010078
Received: 21 November 2019 / Revised: 11 January 2020 / Accepted: 15 January 2020 / Published: 17 January 2020
(This article belongs to the Special Issue Drug Delivery Through Pulmonary)
Inhalation therapy with a nebulizer is widely used in chronic respiratory disease. Mixing inhalation solutions/suspensions for simultaneous inhalation is more convenient and might simplify the administration procedure. However, there are no data available to address the in vitro aerosol characteristics and physico-chemical compatibility of Combivent® (containing Salbutamol and Ipratropium bromide) with other inhalation solutions/suspensions. In order to investigate the in vitro aerosol characteristics and physico-chemical compatibility of Combivent® with Budesonide, Beclomethasone, and N-acetylcysteine, the appearance, pH, osmotic pressure, chemical stability, mass median aerodynamic diameter (MMAD), fine particles fraction (FPF), particle size corresponding to X50 (particle size, which accounts for 50% of the total cumulative percentage of volume of all particles), delivery rate, and total delivery of the mixed inhalation solution/suspension were tested. There was no change in the appearance such as a change in color or precipitation formation at room temperature. The pH, osmolality, and chemicals of the mixtures were stable for 24 h after mixing. There were no significant differences between Combivent®, Budesonide, Beclomethasone, N-acetylcysteine, and the mixtures in MMAD, FPF, X50, the delivery rate, and the total delivery. This indicates that the mixtures were physically and chemically compatible. The mixing did not influence the particle size, distribution, or delivery compatibility of the mixtures. View Full-Text
Keywords: inhalation; nebulizer; physico-chemical; particle size and distribution; delivery compatibility; Combivent®; Budesonide; Beclomethasone; N-acetylcysteine inhalation; nebulizer; physico-chemical; particle size and distribution; delivery compatibility; Combivent®; Budesonide; Beclomethasone; N-acetylcysteine
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MDPI and ACS Style

Zhang, R.; Hu, J.; Deng, L.; Li, S.; Chen, X.; Liu, F.; Wang, S.; Mohammed Abdul, K.S.; Beng, H.; Tan, W. Aerosol Characteristics and Physico-Chemical Compatibility of Combivent® (Containing Salbutamol and Ipratropium Bromide) Mixed with Three Other Inhalants: Budesonide, Beclomethasone or N-Acetylcysteine. Pharmaceutics 2020, 12, 78.

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