Effects of Particle Size of Bulk Drug and food on the Bioavailability of U-78875 in Dogs |
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Authors: | Toshiaki Nishihata Mayumi Ishizaka Sigeharu Yokohama Alice C. Martino Roger E. Gordon |
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Affiliation: | a Upjohn Pharmaceutical Limited, Tsukuba Research Labs., Ibaraki, Japanb Upjohn Laboratories, DDR&D Dry Product, The Upjohn Company, Kalamazoo, Michigan, USA |
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Abstract: | The effects of particle size and food on the absolute bioavailability of U-78875 in dogs after oral administration of either a suspension or tablet dosage form were investigated. A reduction of particle size caused a significant increase in bioavailability along with an increase in dissolution rate. Additionally, both suspension and tablet dosage forms administered after food caused an increase in bioavailability. Thus, to accelerate drug dissolution, a reduction of U-78875 particle size from the unmilled state is important for the optimization of formulation compositions. To increase the bioavailability of U-78875, postprandial dosing should be considered. |
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