A spacer is a simple device that's proven to make an inhaler work better. In fact, studies show they make an inhaler work 75 percent better, reduce side effects, and improve coordination. Yet most asthmatics -- perhaps as many as 90 percent -- don't use one.
Most asthma rescue inhalers are metered dose inhalers. This means that every time you squirt the inhaler you get the same amount of medicine squirted into your airway. Yet one flaw with this design is the medicine is prayed...

