Montelukast is not indicated for use in acute asthma attacks. Therapy with montelukast can be continued during acute exacerbations of asthma. Montelukast should not be used as monotherapy for the treatment and management of exercise induced bronchospasm. There are no adequate and well controlled studies in pregnant women. Montelukast should be used during pregnancy only if clearly needed. Montelukast is excreted in milk. So caution should be exercised when montelukast is given to a nursing mother.