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Asthma is a chronic inflammatory condition of the airways characterized by episodes of chest tightness, breathlessness, and wheezing. There are indications that lifestyle, genetic, and environmental predispositions play a key role in exacerbating the risk of asthma development. Some common triggers of asthma include viral infection, allergens, exercise, food chemicals, air pollutants, and occupational irritants. Antiasthma drugs can be classified as preventers, relievers, and other drugs by their chemical and pharmacological classes and their roles in the management of asthma. The relievers are drugs used in the therapy of asthma for quick relief of occurring symptoms. They are good for prevention of exercise-induced bronchoconstriction. The preventers are regular drugs used in the treatment of asthma to minimize flare-ups and symptoms in order to control ...

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