[Ketotifen, a new prophylactic agent in asthma (author's transl)].

12 patients with bronchial asthma received treatment with Ketotifen for three months. 8 patients then continued this medication for at least 9 months. During this period it was possible to reduce the amount of theophylline and bronchodilator amines as well as the maintenance dose of corticosteroids. Afterwards 6 patients showed clinical deterioration while on placebo; this was considered further evidence of the anti-asthmatic effect of Ketotifen. Ketotifen seems to be acceptable as a prophylactic agent in asthma.