A dosage form and a method are disclosed for delivering to a human patient a drug in an ascending amount over time. In particular, the invention provides a dosage form having a length greater than its width, the dosage form comprising:
(a) a first layer comprising 10 ng to 700 mg of a drug selected from methylphenidate or a pharmaceutically acceptable salt thereof;
(b) a second layer comprising 80% to 95% of a hydrophilic-expandable polymer;
(c) a wall comprising a semipermeable composition that surrounds the first and second layer;
(d) an exit in the wall communicating with the first layer for delivering the drug; and wherein the dosage form when in operation administers the drug in an ascending rate over time.
本发明公开了一种剂型和一种方法,用于向人类患者递送随时间递增的药物。特别是,本发明提供了一种长度大于宽度的剂型,该剂型包括
(a) 第一层,包含 10 毫微克至 700 毫克选自
哌醋甲酯或其药学上可接受的盐的药物;
(b) 第二层,包括 80%至 95%的亲
水性可膨胀聚合物;
(c) 包含半透性成分的壁,环绕第一层和第二层;
(d) 壁中与第一层相通的出口,用于递送药物;以及其中的剂型在使用时以随时间递增的速率递送药物。