生物黏附给药系统(bioadhesive drug delivery system,BDDS)是现代给药剂型中一个新兴分支。生物黏附制剂是一类以生物黏附材料为药物载体,通过生物黏附作用长时间黏附于黏膜而发挥疗效的药物制剂。与其他给药剂型相比,生物黏附制剂有以下主要优点:①载体多由具有生物黏附材料所组成,对黏膜都有不同程度的黏附作用,可以延长释药 Bioadhesive drug delivery system (BDDS) is an emerging branch of modern dosage forms. Bioadhesive preparation is a type of pharmaceutical preparation that uses bioadhesive material as a drug carrier and has the effect of sticking to mucosa through bioadhesion for a long time. Compared with other dosage forms, bioadhesive formulations have the following main advantages: ① carrier composed of a number of bioadhesive materials, have different degrees of mucosal adhesion, can extend the release of drugs