ReviewCurrent pharmaceutical biotechnology2025
Considerations and Challenges to Develop Drug-drug Coamorphous System: A Recent Update.
Review in Current pharmaceutical biotechnology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Poor water solubility of several drugs, especially BCS class II and IV drugs, restricts their dissolution and negatively affects oral absorption. Amorphization of drugs is a year-old approach to enhance solubility and dissolution of poorly water-soluble drugs. Polymeric amorphous systems have been proven effective but have disadvantages, such as low drug loading, high carrier content, etc. In a coamorphous system, a small molecule can be used as a coformer that keeps the amorphous form of a drug stable. In a drug-drug coamorphous system (CAS), one therapeutically active moiety can act as a coformer for the other drug. Although effective, the rationale of selecting the drugs and optimising the ratio without compromising therapeutic effect and safety is challenging. The preparation method is also a challenge because the stress during the processing method may result in the loss of crystallinity. Hence, the processing stability of the amorphous drug is a significant concern. A stable CAS is formed when two drugs generate some molecular-level interaction. In silico prediction of miscibility, molecular dynamic simulation, functional group analysis by Fourier Transform infrared spectroscopy, Raman spectroscopy, NMR, etc. contribute to the analysis of molecular-level interaction. Additionally, the article discusses the preparation method and the selection of excipient to form an effective CAS.
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