GUSTOIMAGES / SCIENCE PHOTO LIBRARY GUSTOIMAGES / SCIENCE PHOTO LIBRARY
Asthma inhaler. Asthma is a condition in which the small airways (bronchioles) in the lungs constrict, causing attacks of wheezing and breathlessness. This inhaler dispenses the corticosteroid drug beclometasone, which prevents, rather than relieves asthma attacks. It reduces swelling and irritation in the airways of the lungs.
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