Flovent Diskus is a plastic packaged inhaler that contains a foiled blister strip, each blister containing white powder. The powder is composed of a mixture of micronized fluticasone propionate. The mixture is packaged in 50,100 and 250 mcg. It is packed in 12.5 mg formulation that contains lactose monohydrate, basically made of milk proteins. Once the inhaler is activated, the powder is then dispersed directly to the airstream that is made by the patient who inhales through the mouthpiece.