An intravaginal device that provides biologically active circulating concentrations of an aromatase inhibitor for at least about of 4 days. Liposome-based and a wax-based formulations were used to assess letrozole diffusion through bovine vaginal mucosa in a diffusion chamber study. The wax-based vehicle was selected for further development of a letrozole intravaginal device based on its steady release rate. The addition of a letrozole-containing gel coating improved initial absorption and hastened the increase on plasma concentrations of the active ingredient, while the letrozole-containing wax-based vehicle maintained prolonged delivery from the intravaginal device.
一种阴道内装置,可在至少 4 天左右的时间内提供具有
生物活性的芳香化酶
抑制剂循环浓度。在一项扩散室研究中,使用脂质体和蜡基制剂评估了
来曲唑在牛阴道粘膜中的扩散情况。根据其稳定的释放率,我们选择了蜡基载体来进一步开发
来曲唑阴道内装置。添加含
来曲唑的凝胶涂层可提高初始吸收率,加快活性成分血浆浓度的增加,而含
来曲唑的蜡基载体可保持阴道内装置的长期给药。