The invention concerns a composition comprising a microemulsion forming system by contact with a hydrophilic phase brought, after ingestion, by the physiological fluid, said microemulsion forming system comprising: at least an active principle; a lipophilic phase; a surfactant (TA); a co-surfactant (CoTA). The invention is characterized in that said composition further comprises an inert polymeric matrix which cannot be ionised at physiological pH, dispersed in the microemulsion forming system before ingestion, said polymeric matrix being capable, after ingestion, of forming on contacting the physiological fluid, a gelled polymeric matrix enabling to release by diffusion, in continuous and prolonged manner the already micro-emulsified active principle.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation of copending PCT application PCT/FR 99/10889, filed Jul. 30, 1999, designating the United States and claiming priority from French application 98.10313, filed Aug. 7, 1998. The priorities of both applications are claimed herein, and the entire disclosures of both are incorporated herein by reference.
