The invention discloses combination therapies and formulations of a stimulant and mirtazapine and their methods of use. The dielectric stack includes a first layer of one material overlying the substrate and a second layer of a different material overlying the first layer. The term \u201cbox\u201d is used herein to refer to cuboids. These structures and assemblies enable high speed testing in wafer form. The carrier tube is formed from a mixture of a plant fiber material with starch andor protein.