some important features of oral asthma prophylaxis with ketotifen are underlined , namely the effect of ketotifen on the characteristic bronchial hyperreactivity of asthma , the types of asthma which respond best to ketotifen treatment , the effect of ketotifen in reducing the concomitant use of corticosteroids and bronchodilators , a comparison of ketotifen with specific antihistamines , theophylline derivatives and sodium cromoglycate , and the side-effects and long-term safety of ketotifen .
C0004096
asthma
C0039771
theophylline