RT Journal Article SR Electronic T1 Unraveling The Mysteries Of Serum Theophylline Levels: A Patient Care Report In The Light Of Pharmacokinetics JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 282 OP 287 DO 10.3122/jabfm.1.4.282 VO 1 IS 4 A1 Henry Bussey A1 Christine Quandt A1 Raylene Rospond A1 Winnie Loesch YR 1988 UL http://www.jabfm.org/content/1/4/282.abstract AB One of our patients had trouble maintaining therapeutic and safe levels of theophylline, even though we were careful in planning and monitoring her drug regimen. This case report shows how we were able to use principles of pharmacokinetics to distinguish among plausible explanations for her experience. We discovered that she was not taking the drug consistently as prescribed and that supervised administration resolved apparent contradictions between doses and serum levels. We believe that physicians can use the same information and methods that we used to get better and safer results from theophylline therapy.