| 摘要 |
Pharmaceutical compositions comprising a water/oil/water (W1/O2/W3) or an oil/water/oil (O1/W2/O3) double microemulsion, with droplets size below one micron, with the drug included in the internal water phase W1 or internal oil phase O1, whereas the external oil O2 and second water phase W3 or the external water phase W2 and second oil phase 03 contain substances able to inhibit the enzymes, present in the mucosa or biological barrier to be permeated or physiological environment of administration, capable to degrade the drug or to cause its efflux from the barrier; alternatively the external oil and second water phase or external water phase and second oil phase contain permeation enhancing agents, i.e., substances able to increase the diffusion of the drug through the biological barrier. |
