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Cocrystals of zonisamide: physicochemical characterization and sustained release solid forms

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Abstract

We report four cocrystals of the antiepileptic drug, zonisamide (ZNS), which encounters half-life fluctuation when administered adjunctly with other antiepileptic drugs. Single crystals for two of the novel cocrystals of ZNS were successfully prepared from solvent evaporation experiments and their crystal structures were determined. Pharmaceutically acceptable cocrystals were analyzed for their dissolution rate, solubility and stability to draw conclusions on the impact of cocrystallization on the physicochemical properties of ZNS. It was found that the cocrystals showed lower solubility and dissolution rates and offer potential benefits in the development of sustained release formulations of ZNS which could address issues regarding its half-life fluctuation. Recent attempts to explore newer therapeutic applications have suggested ZNS as a potential drug for weight loss management. In this regard, the cocrystal of ZNS with caffeine, which has also been used in weight loss management, promises potential applications in the development of a novel fixed-dose combination drug which could offer synergistic therapeutic benefits in the treatment of obesity.

Graphical abstract: Cocrystals of zonisamide: physicochemical characterization and sustained release solid forms

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Publication details

The article was received on 19 Jan 2018, accepted on 17 Apr 2018 and first published on 17 Apr 2018


Article type: Paper
DOI: 10.1039/C8CE00084K
Citation: CrystEngComm, 2018, Advance Article
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    Cocrystals of zonisamide: physicochemical characterization and sustained release solid forms

    S. Aitipamula, J. Cadden and P. S. Chow, CrystEngComm, 2018, Advance Article , DOI: 10.1039/C8CE00084K

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