MARK THOMAS / SCIENCE PHOTO LIBRARY MARK THOMAS / SCIENCE PHOTO LIBRARY
Asthma inhaler. Patient holding an asthma inhaler containing Salamol (Salbutamol). Asthma is a condition in which the small airways (bronchioles) in the lungs constrict, making it difficult to breathe. This causes wheezing, coughing and breathlessness. The inhaler is an aerosol pump, which releases bronchodilator drugs that widen the airways.
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