Abstract: Active agent encapsulated with a protective composite coating is provided. The coating comprises a first hydrophilic water-swellable inner coating comprising a sealant agent combined with a plasticizer to coat particles of the active agent; and a second hydrophobic outer coating comprising a hydrophobic component combined with an enteric polymer and a plasticizer. The composite coating enhances the stability/viability of the active agent during prolonged storage prior to administration, and on exposure to harsh physiological conditions (e.g. gastric environment) following administration to permit enteric delivery of the active agent. A method of preparing the coated active agent is also provided.