Three-step inhalation method: 1, remove the device lid, hold the device vertically, the red base will be rotated to the end in any direction. 2. Rotate it in the opposite direction to the end and hear a click. 3.Exhale first, then hold the mouthpiece and inhale firmly and deeply. Caution: 1. After inhaling Cymbalta, rinse your mouth promptly. 2. Do not blow into the DuPont to avoid internal moisture. 3. Do not scrub the DuPont with water and liquid, please wipe the mouthpiece with a dry paper towel regularly.