title: A comparative trial of choline theophyllinate and controlled release aminophylline in chronic childhood asthma.
abstract: A comparison of pharmacokinetics and therapeutic effects of a standard oral theophylline preparation (Choline Theophyllinate) and controlled release aminophylline (Phyllocontin) was made in two parallel double blind trials in 25 children with chronic asthma. Fourteen children entered a double blind cross-over trial; the remaining 11 were allocated to a parallel trial with no change of theophylline preparation throughout. Sustained plasma theophylline levels were observed with the controlled release preparation in contrast to the low morning levels obtained with Choline Theophyllinate. No significant differences were found for peak theophylline levels, morning or evening peak flow rates or required access to other bronchodilators. However nocturnal symptoms were significantly reduced and daytime activity scores improved (P less than 0.05) on the controlled release preparation. The sustained plasma theophylline levels found in children taking the controlled release aminophylline may have provided a small but useful therapeutic advantage over the standard preparation.
mesh_terms: D000293:Adolescent; D000628:Aminophylline / Q000378:metabolism / Q000627:therapeutic use*; D001249:Asthma / Q000188:drug therapy*; D002648:Child; D002794:Choline / Q000031:analogs & derivatives* / Q000378:metabolism / Q000627:therapeutic use; D002908:Chronic Disease; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007700:Kinetics; D008297:Male; D013806:Theophylline / Q000031:analogs & derivatives* / Q000378:metabolism / Q000627:therapeutic use
chemical_list: D000628:Aminophylline; C012839:cholinophyllin; D013806:Theophylline; D002794:Choline