PT - JOURNAL ARTICLE ED - , TI - Interactions between antibiotics and oral contraceptives AID - 10.1136/dtb.25.2.5 DP - 1987 Jan 26 TA - Drug and Therapeutics Bulletin PG - 5--7 VI - 25 IP - 2 4099 - http://dtb.bmj.com/content/25/2/5.short 4100 - http://dtb.bmj.com/content/25/2/5.full SO - Drug Ther Bull1987 Jan 26; 25 AB - Oral contraceptives have been widely used for many years and estimates suggest that more than 3 million women in Britain are now regular users. The data sheets for all oral contraceptives suggest that women use an alternative method of contraception whilst taking an antibiotic. Is this really necessary?