Disclosed is a performance-enhancing supplement for pulmonary administration wherein the supplement consists of a base e-liquid and a selected combination of supplement ingredients. The base liquid is selected from vegetable glycerin or propylene glycol, and the combination of ingredients is selected from at least three of pineapple lime extract, riboflavin, L-tyrosine, L-theanine, taurine, caffeine, agmatine sulfate, citrulline malate, and beetroot. The resulting performance-enhancing supplement is provided in a standard vape cartridge for use in an electronic cigarette device.
