Improvement of impact toughness of sugar-coated tablets manufactured by the dusting method.
The purpose of this study was to improve the impact toughness of sugar-coated tablets manufactured by a dusting method. The effects of sugar-coating formulations, which were the sugar-coating suspension formulations and the dusting powder formulations, on impact toughness of sugar-coated tablets were investigated. Impact toughness of sugar-coated tablets was measured by the friability test. We found that the dusting powder formulation was a control factor in impact toughness of sugar-coated tablets manufactured by the dusting method. The dusting method using dusting powder containing 20% microcrystalline cellulose (MCC, Avicel PH-F20) was a useful method for improvement of the impact toughness of sugar-coated tablets. The mechanism of improvement of impact toughness was that MCC in the subcoating layer resulted in a tight bond between the subcoating layer and the smoothing layer and prevented separation of the two layers on impact, because MCC improved the wettability of the subcoating layer, increased the surface roughness of the subcoating layer, and played the role of a binder between the two layers. We confirmed that the MCC between the subcoating layer and the smoothing layer acts to prevent separation of the two layers by impact. We demonstrated that MCC is a suitable material for sugar-coating in order to improve the impact toughness of sugar-coated tablets.
Ohmori
Shinji
S
Healthcare Research Laboratories, Consumer Healthcare Company, Takeda Chemical Industries, Ltd, Osaka, Japan. Ohmori_Shinji@takeda.co.jp
Ohno
Yasuo
Y
Makino
Tadashi
T
Kashihara
Toshio
T
D002241:Carbohydrates / Q000737:chemistry*; D002626:Chemistry, Pharmaceutical / Q000379:methods*; D011208:Powders; D013607:Tablets
D002241:Carbohydrates; D011208:Powders; D013607:Tablets