Long-term evaluation of fenoterol by two different modes of administration (oral versus metered aerosol).

Thirteen asthmatic children were treated double-blind for 6 weeks each with either inhaled or oral fenoterol (a beta-2-selective adrenergic bronchodilator) three times a day. The oral dose regimen resulted in superior bronchodilation on the basis of peak expiratory flow rates, although clinical symptom scores did not differ with the route of administration. We conclude that oral fenoterol can be used on a chronic basis for the treatment of moderate asthmatics. Doses of inhaled fenoterol higher than 0.4 mg three times per day used in this study may be required to produce a similar effect to 0.8 mg/kg of oral fenoterol in three divided doses.