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      Utilisation of Thermal Methods for the Screening of Three Component Co-amorphous Systems

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          Summary

          Indomethacin and piroxicam are known to become amorphous upon rapid cooling after melting. Multiple three-component co-amorphous mixtures have been produced via a melt quench method to evaluate the influence of the third component on stability and physical properties on the co-amorphous mixture of piroxicam and indomethacin. These have then been tested using thermal gravimetric analysis, differential scan calorimetry and hot stage microscopy. Results have confirmed the creation of a three-component co-amorphous system.

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          Recent advances in co-amorphous drug formulations.

          Co-amorphous drug delivery systems have recently gained considerable interest in the pharmaceutical field because of their potential to improve oral bioavailability of poorly water-soluble drugs through drug dissolution enhancement as a result of the amorphous nature of the material. A co-amorphous system is characterized by the use of only low molecular weight components that are mixed into a homogeneous single-phase co-amorphous blend. The use of only low molecular weight co-formers makes this approach very attractive, as the amount of amorphous stabilizer can be significantly reduced compared with other amorphous stabilization techniques. Because of this, several research groups started to investigate the co-amorphous formulation approach, resulting in an increasing amount of scientific publications over the last few years. This study provides an overview of the co-amorphous field and its recent findings. In particular, we investigate co-amorphous formulations from the viewpoint of solid dispersions, describe their formation and mechanism of stabilization, study their impact on dissolution and in vivo performance and briefly outline the future potentials.
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            Author and article information

            Journal
            BJPharm
            British Journal of Pharmacy
            University of Huddersfield Press
            2058-8356
            11 July 2018
            : 2
            : 2 , Proceedings of the 8 th APS International PharmSci 2017
            : S23-S25
            Affiliations
            Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, ME4 4TB, UK
            Author notes
            *Corresponding author. Tel.: +44 2083319841 Fax: +44 2083319805 E-mail: M.Antonijevic@ 123456greenwich.ac.uk
            Article
            10.5920/bjpharm.2017.21
            d351e144-b90c-487d-9f10-960079c4826f
            © 2017, Alessandra D’Angelo, Benjamin Edgar, Milan D. Antonijevic

            This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY) 4.0 https://creativecommons.org/licenses/by/4.0/.

            History
            : 17 March 2017
            : 07 August 2017

            Medicine,Pharmacology & Pharmaceutical medicine,Health & Social care
            HSM,DSC,Co-amorphous,TGA
            Medicine, Pharmacology & Pharmaceutical medicine, Health & Social care
            HSM, DSC, Co-amorphous, TGA

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