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  • Title: Recent Advancements in Pharmaceutical Cocrystals, Preparation Methods, and their Applications.
    Author: Manchanda D, Kumar A, Nanda A.
    Journal: Curr Pharm Des; 2021; 27(44):4477-4495. PubMed ID: 33858309.
    Abstract:
    The issue of poor aqueous solubility is a major hurdle in pharmaceutical dosage form design. A large number of active molecules in the research and development pipeline possess poor aqueous solubility and, hence, are not suitable for further development. Therefore, the pharmaceutical industry is continuously in search of techniques to tackle the issue of poor solubility. Cocrystallization has gained popularity as one such technique for the modulation of physicochemical properties of an active pharmaceutical ingredient (API). Pharmaceutical cocrystals consist of an API non-covalently linked to a crystal former or coformer that plays an important role in imparting the desired properties to the cocrystal. Cocrystallization of an API with a suitable coformer not only enhances solubility but also helps in improving physicochemical properties such as stability, bioavailability, mechanical properties, etc., without changing the pharmacological activity of the API. The past decade has experienced enormous growth in cocrystal research which paved the way for drug-drug, higherorder, and nano-sized cocrystals, and further exploration of the applications of cocrystals is still going on. Recently FDA and EMA have released regulatory guidelines for pharmaceutical cocrystals, which grant them a status similar to that of polymorphs and salts, which in turn opens a wider prospect for pharmaceutical cocrystals in terms of intellectual property.
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