Article Text

Download PDFPDF
Sustained-release theophylline preparations


Oral theophyllines have long been used to treat airway narrowing in patients with asthma and chronic bronchitis.1 Their popularity waned when effective local treatment became available with inhaled β2 stimulants, and later with the anticholinergic drug ipratropium bromide. They are now being used more widely again since the advent of sustained-release (s/r) preparations, several of them strongly promoted. When are they worth using?

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.