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Cocrystals of zonisamide: Physicochemical characterization and sustained release solid forms

Cocrystals of zonisamide: Physicochemical characterization and sustained release solid forms
Cocrystals of zonisamide: Physicochemical characterization and sustained release solid forms

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.

1466-8033
2923-2931
Aitipamula, Srinivasulu
e1ca2522-d14f-4f82-89ab-1996a021582a
Cadden, Joseph
86c93935-5d3e-4c0c-bd73-af51f60c9d1c
Chow, Pui Shan
872dd096-66bd-433e-91d4-9096de9a994f
Aitipamula, Srinivasulu
e1ca2522-d14f-4f82-89ab-1996a021582a
Cadden, Joseph
86c93935-5d3e-4c0c-bd73-af51f60c9d1c
Chow, Pui Shan
872dd096-66bd-433e-91d4-9096de9a994f

Aitipamula, Srinivasulu, Cadden, Joseph and Chow, Pui Shan (2018) Cocrystals of zonisamide: Physicochemical characterization and sustained release solid forms. CrystEngComm, 20 (21), 2923-2931. (doi:10.1039/c8ce00084k).

Record type: Article

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.

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More information

Accepted/In Press date: 17 April 2018
e-pub ahead of print date: 17 April 2018
Published date: 2018

Identifiers

Local EPrints ID: 422409
URI: https://eprints.soton.ac.uk/id/eprint/422409
ISSN: 1466-8033
PURE UUID: cd313ede-03da-4ddf-a207-3e0b48b69dfb

Catalogue record

Date deposited: 23 Jul 2018 16:30
Last modified: 23 Jul 2018 16:30

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