With admire to their principal mechanism of action, anti-asthma capsules are categorised as bronchodilators or anti inflammatory capsules. Inhaled beta 2-agonists are the best bronchodilators. The shorts performing beta 2-agonists are used for the comfort of acute signs and symptoms while lengthy performing beta 2-agonists are used on a normal basis, concomitantly with inhaled corticoids, for lengthy–time period manipulate of signs and symptoms.