Abstract: Particles offering multiple doses of an active agent to a subject via a single administration of the active agent to the subject are provided. The particles comprise multiple layers, including two dosing layers each having the active agent and an intervening layer that separates the two dosing layers, and provide a first dose of the active agent from the dosing layer covering the intervening layer upon exposure to an aqueous environment after the particles are administered to the subject, and later a second dose of the active agent from the dosing layer covered by the intervening layer after the intervening layer degrades in the body of the subject. Methods for preparing the particles are also provided. Methods for treating or preventing a disease or disorder in a subject in need thereof with two or more doses of an active agent via a single administration to the subject are further provided.