pulmonary disorders
Drug Treatment of Asthma
Mast cell stabilizers
Mast cell stabilizers inhibithistaminerelease from mast cells, reduce airway hyperresponsiveness, and block the early and late responses to allergens. They are given by inhalation prophylactically to patients with exercise-induced or allergen-induced asthma. They are ineffective once symptoms have occurred. They are the safest of all antiasthmatic drugs but the least effective. 