发明名称 |
Compositions for treatment of attention deficit hyperactivity disorder |
摘要 |
Therapeutic compositions deliver a therapeutic amount of methylphenidate in a delayed and extended release formulation. The dosage form exhibits a lag time prior to release of from 6 to 8 hours or longer, followed by a sustained release period. |
申请公布号 |
US9498447(B2) |
申请公布日期 |
2016.11.22 |
申请号 |
US201615069734 |
申请日期 |
2016.03.14 |
申请人 |
Ironshore Pharmaceuticals & Development, Inc. |
发明人 |
Lickrish David;Zhang Feng |
分类号 |
A61K9/50;A61K31/4458;A61K9/16;A61K9/48;A61K31/137 |
主分类号 |
A61K9/50 |
代理机构 |
Vinson & Elkins LLP |
代理人 |
Vinson & Elkins LLP |
主权项 |
1. A solid, oral pharmaceutical composition comprising:
a single population of beads, said beads comprising: a core comprising methylphenidate or a pharmaceutical salt thereof; a sustained release layer enclosing the core, wherein the sustained release layer comprises a water-insoluble and water-permeable polymer, a water soluble polymer, a hydrophobic plasticizer, and a hydrophobic binder; and a delayed release layer enclosing the sustained release layer, wherein the delayed release layer comprises a pH dependent polymer or copolymer that is insoluble in aqueous medium at pH lower than 5.5; wherein the formulation provides an 8 hour lag time during which the formulation releases no more than 10% of the total methylphenidate or a pharmaceutical salt thereof followed by a sustained release period of 10-12 hours when the composition is placed in 700 ml aqueous solution of 0.1N HCl pH 1.1, for up to 2 hours followed by 4 hours in sodium phosphate buffer at pH 6.0; followed by 14 hours in sodium phosphate buffer, pH 7.2 at 37° C.±0.5° C., as measured by the USP Apparatus I. |
地址 |
Camana Bay KY |