Introduction [edit]. A carboxyl group consists of a carbon double-bonded to an oxygen and also bonded to a-OH group. Compounds with carboxyl groups are called carboxylic acids or organic acids. The carboxyl group can act as an acid when by donating a proton (H +) to a solution and becoming ionized.
It therefore makes perfect sense to use the bronchodilator first, wait a few minutes, and then to use the steroid inhaler, after the airways have been opened up and are more relaxed. This way, the steroid can penetrate the lungs more effectively, and get down to decrease inflammation in your smaller airways.
A metered-dose inhaler, called an MDI for short, is a pressurized inhaler that delivers medication by using a propellant spray. To use an MDI: 1  Shake the inhaler well before use (3 or 4 shakes). 2  Remove the cap. 3  Breathe out, away from your inhaler. 4  Bring the inhaler to your mouth.5  Start to breathe in slowly. 6  Remove the inhaler from your mouth, and hold your breath for about 10 seconds, then breathe out.o use an MDI: 1  Shake the inhaler well before use (3 or 4 shakes). 2  Remove the cap. 3  Breathe out, away from your inhaler. 4  Bring the inhaler to your mouth. 5  Place it in your mouth between your teeth and close you mouth around it. 6  Start to breathe in slowly.