In this video tutorial, viewers learn how to a metered does inhaler. The metered inhaler has 3 parts: the plastic case, mouthpiece cover, mouthpiece, base and medicine canister. Before using the inhaler, always check inside and outside to make sure that it is clean. Begin by testing the inhaler. Shake it well and holding it away from you, press the top of the canister once. To use the inhaler, begin by shaking it well and hold it upright. Breathe in and place the mouthpiece in between your teeth. Now press down on the canister to release the puff of medicine inside your mouth. This video will benefit those viewers who have an medical condition and would like to learn how to use an inhaler.