What is singulair used forWhat is singulair used forFrom the mailbox, a question about the example of. . . Singulair may be used in children that are . . . In case of exercise-induced bronchoconstriction . By blocking this chemical that causes an allergen to be active, this is where Singulair helps in preventing allergies and asthma. . . . I don't want any books. . . . As this eMedTV segment explains, Singulair is used for treating nasal allergy symptoms and preventing asthma attacks from occu... more