RT Journal Article SR Electronic T1 Drug inhalation systems for asthmatics JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 41 OP 43 DO 10.1136/dtb.19.11.41 VO 19 IS 11 YR 1981 UL http://dtb.bmj.com/content/19/11/41.abstract AB In the treatment of asthma, drugs are probably best taken by inhalation as this provides a response equivalent to that from systemic administration without risk of many of the unwanted effects. Only when this approach fails need alternative routes be sought. Several types of inhalant system are available, many specific to a single drug. This article considers the choice of inhalant systems and how each should be used to best advantage.