| abstract |
(57) [Summary] [Constitution] The present invention is characterized in that an alkali metal salt of an organic compound whose water solubility decreases in an acidic region is used as a main ingredient, and this is blended with a water-insoluble polymer compound and a water-soluble polymer compound. The present invention provides a pharmaceutical preparation for oral absorption. [Effects] The oral absorption preparation of the present invention is easy to manufacture, can avoid insolubilization of the main drug in the acidic range, can improve the absorption in the digestive tract, and can further improve the acidity of gastric juice, the timing of administration, and the presence or absence of dietary intake. Regardless, it can guarantee excellent bioavailability. |