A dosage composition for controlled release of a pharmaceutical compound to body fluids such as the tears of the eye, or surgical site fluids, has an external matrix rapidly soluble in said fluids, and bioerodible microparticles dispersed in the external matrix, the microparticles containing the pharmaceutical compound and being capable of releasing it gradually and in controlled fashion to the body fluids, and being of a size to be retained for a period of time long enough to provide an effective dose of the pharmaceutical compound to the site of placement for an extended period of time. The microparticles ultimately dissolve in the body fluids.
一种可将药物化合物控制释放到体液(如眼泪或手术部位体液)中的剂量组合物,具有可快速溶解于上述体液的外部基质,以及分散在外部基质中的可
生物降解的微颗粒,这些微颗粒含有药物化合物,能够以可控制的方式将其逐渐释放到体液中,其大小可保留足够长的时间,以便在较长的时间内为放置部位提供有效剂量的药物化合物。微颗粒最终会溶解在体液中。