The present invention relates to a timed-release compression-coated said composition for oral administration, said composition being a hydrgel-forming compression-coated solid preparation comprising a core tablet comprising a drug and an outer layer comprising a hydrogel-forming polymer substance and a hydrophilic base, characterized in that (1) said core tablet comprising a drug and a freely erodible filler, (2) said core tablet is capable of approximately 40 to approximately 90% erosion; and (3) said outer layer substantially does not comprise the same drug with said drug. By releasing a drug after a specific lag time, it becomes possible to effectively deliver a drug to a specific site in the digestive tract. It is therefore useful as presented as a timed-release solid composition for oral administration of a drug that is to be effectively delivered in high concentrations to the afflicted site in the lower digestive tract, a drug that is to be effectively absorbed in the lower digestive tract, a drug that is effective for chronopharmacotherapy, etc.
本发明涉及一种用于口服的定时释放压缩包衣所述组合物,所述组合物是一种
水凝胶形成的压缩包衣固体制剂,包括由药物组成的核心片剂和由
水凝胶形成的聚合物物质和亲
水性基质组成的外层,其特征在于:(1)所述核心片剂包括药物和可自由侵蚀的填料;(2)所述核心片剂能够被侵蚀约40%至约90%;以及(3)所述外层基本上不包括与所述药物相同的药物。通过在特定滞后时间后释放药物,可以有效地将药物输送到消化道的特定部位。因此,它可以作为一种定时释放固体组合物,用于将高浓度的药物有效地输送到下消化道中的患病部位、在下消化道中有效吸收的药物、对慢性药物治疗有效的药物等的口服给药。