To use an asthma inhaler, start by shaking the inhaler well, then remove the cap and breathe out fully. Place the mouthpiece between your lips, press down on the inhaler to release the medication as you begin to inhale slowly and deeply. Hold your breath for about 10 seconds to allow the medication to reach your lungs, then breathe out slowly. If more than one puff is prescribed, wait about 30 seconds before repeating the process. Always follow your doctor’s instructions on how many puffs to take and when.