Pharmaceutical compositions and methods for the treatment of neoplastic disease and comprising the combination of a taxane, such as docetaxel, with a CYP3A4 inhibitor, such as ritonavir. Methods of treatment of neoplastic disease incorporating the administration of a taxane and the administration of a CYP3A4 inhibitor, either simultaneously or separately, are also included. Further, kits for carrying out the methods are included. Solid pharmaceutical taxane compositions for oral administration comprising a substantially amorphous taxane, a carrier and a surfactant are also included.新生物疾患の治療のための、ドセタキセルなどのタキサンとCYP3A4阻害剤、例えばリトナビルとの組み合わせを含む医薬組成物および方法。タキサンの投与およびCYP3A4阻害剤の同時または別々の投与を組み込んだ新生物疾患の治療方法も含まれる。さらに、この方法を実施するためのキットが含まれる。実質的に非晶質のタキサン、担体および界面活性剤を含む経口投与用固体タキサン医薬組成物も含まれる。
