Disclosed in certain embodiments is an immediate release solid oral dosage form comprising a plurality of particles, each particle comprising: (i) a core comprising a first active agent; (ii) a coating comprising a second active agent layered over the core; and (iii) a material that is sensitive to acidic pH layered over the coated core; wherein the dosage form releases at least about 70% of the second active agent within 45 minutes as measured by in-vitro dissolution in a USP Apparatus 2 (paddle) at 50 rpm in 500 ml 0.1 N HCl at 37° C.
在某些实施方案中,公开了一种速释口服固体制剂,它包括多个颗粒,每个颗粒包括:(i) 由第一活性剂组成的核心;(ii) 覆盖在核心上的由第二活性剂组成的包衣;以及 (iii) 覆盖在包衣核心上的对酸性 pH 值敏感的材料;其中,根据在 U
SP Apparatus 2(桨)中以 50 rpm 的速度在 500 ml 0.1 N HCl 溶液中于 37°C 下进行体外溶解的测定,该制剂可在 45 分钟内释放至少约 70% 的第二活性剂。