The present invention provides pasty or liquid compositions for applications on mucous membranes of cavities easily reached by hand, having a bio-adhesive prolonged effect or release. The composition includes a polysaccharide matrix agent selected from the group constituting of lambda carrageenan and iota carrageenan. The matrix allows the in situ formation of a matrix film with a reinforced bio-adhesive capacity due to complexation reactions between the polysaccharide matrix agent and the components of the local secretions of the mucous membranes. The compositions can also include a lecithin compound as a reinforcing agent of the intrinsic bio-adhesive properties of the polysaccharide matrix agent. The composition can further include at least one of (a) a hydration medium for the polysaccharide matrix agent, (b) a lecithin co-solvent allowing the dispersion of the micellar lecithin solution in the hydration medium, (c) an additive or additives, and (d) at least one active ingredient.
本发明提供了一种糊状或液体组合物,可用于手容易触及的空腔粘膜,具有
生物粘附性延长效果或释放效果。该组合物包括一种
多糖基质剂,该基质剂选自λ
卡拉胶和iota
卡拉胶组成的组。由于
多糖基质剂与粘膜局部分泌物成分之间的络合反应,该基质剂可在原位形成一层具有强化
生物粘附能力的基质膜。组合物还可包括卵
磷脂化合物,作为
多糖基质剂内在
生物粘附性的强化剂。组合物还可进一步包括以下至少一种:(a) 用于
多糖基质剂的
水合介质;(b) 可使胶束卵
磷脂溶液在
水合介质中分散的卵
磷脂助溶剂;(c) 一种或多种添加剂;(d) 至少一种活性成分。