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CLINICAL TRIAL
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL
Development of a Novel Amorphous Agomelatine Formulation With Improved Storage Stability and Enhanced Bioavailability.
Journal of Pharmaceutical Sciences 2018 January
The present work describes the development of a novel formulation of amorphous agomelatine (AGM) that exhibits enhanced in vitro dissolution rate and bioavailability, as well as improved storage stability. AGM was loaded on a mixture of microcrystalline cellulose with a high specific surface area excipient, namely colloidal silicon dioxide, employing a wet granulation method, and the resultant AGM granules were subsequently formulated into immediate release film-coated tablets. Modulated temperature differential scanning calorimetry, hot-state light microscopy, powder X-ray diffraction, attenuated total reflectance FTIR, and micro-Raman spectroscopy revealed that the active pharmaceutical ingredient existed primarily in the amorphous state within the prepared formulations, with some crystals of polymorph I also present. Accelerated stability studies for up to 6 months in alu-alu blisters showed good physicochemical stability during storage. Finally, in vitro dissolution studies and clinical trials in healthy human volunteers showed a remarkable increase in the in vitro dissolution rate and a ∼1.5-fold increase in bioavailability, respectively, compared to the marketed product.
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