We have designed a novel total consumption inhaler that can generate an aerosol that all its droplets are within 2 to 5 microns. This inhaler is the particle size needed to allow the drug to penetrate the lungs for proper absorption. As the drugs become more and more expensive, a total consumption inhaler becomes of importance. Besides, since it is not clear how the drug penetrates the lungs, the user does not know its exact dosage. The present total consumption inhaler allows one to know the precise amount of the drug dosage since all of the drugs formed into an aerosol enter the lungs.