the pharmacokinetic profiles of three oral sustained-release theophylline preparations in steady state ( 350 mg theograd , 350 mg theolair retard [ = nuelin retard ] , and 300 mg theolin retard [ = theodur ] ) were compared in a group of six normal subjects and six patients with moderately severe asthmatic bronchitis .
C0039771
theophylline
C0006277
bronchitis