Priming

Even though Flexhaler is a Dry Powdered Inhaler (DPI), it is highly recommended that you prime a new inhaler before you use it for the first time. Once this is done priming is no longer required even if you don’t use the inhaler for a long period of time.

Instructions

Step 1: Hold the Flexhaler by its base grip in an upright position and twist open the cover

Step 2: Continue holding the Flexhaler in an upright position and with the other hold the middle of the Flexhaler. Do not hold the top of the inhaler mouthpiece

Step 3: Twist the grip clockwise till as far as it will go and again twist it counterclockwise completely. You will hear a click during this process

Step 4: Once again repeat Step 3

You can now use your new Flexhaler.

Source: http://www.pulmicortflexhaler.com/pdf/howto_flexhaler.pdf