Particles for delivery of active ingredients, process of making and compositions thereof

摘要

The present invention discloses compositions having particles comprising, inorganic element; one or more active ingredient and optionally a release rate modulating agent, suitable for the delivery of active ingredients to human and animal tissues. The particles are nanoparticles or microparticles or mixtures thereof, made preferably by sol-gel method. The compositions are useful for application to the topical or mucosal surfaces preferably in the form of creams, gels, lotions, dry powders, spray, foam and other suitable forms.