RT Journal Article SR Electronic T1 Ibufenac (dytransin) JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 46 OP 47 DO 10.1136/dtb.4.12.46 VO 4 IS 12 YR 1966 UL http://dtb.bmj.com/content/4/12/46.abstract AB Ibufenac (4-isobutylphenylacetic acid, Dytransin - Boots) is the result of a search for an effective analgesic which can be used regularly in treating chronic rheumatic disorders without causing gastro-intestinal upset, in other words a non-irritating aspirin substitute.