TY - JOUR T1 - Does eating yogurt prevent antibiotic-associated diarrhoea? JF - British Journal of General Practice JO - Br J Gen Pract SP - 953 LP - 959 VL - 57 IS - 545 AU - Shaun Conway AU - Andrew Hart AU - Allan Clark AU - Ian Harvey Y1 - 2007/12/01 UR - http://bjgp.org/content/57/545/953.abstract N2 - Background Probiotic capsules have been shown to reduce the incidence of antibiotic-associated diarrhoea in a number of settings. If probiotic yogurt were equally efficacious then it would provide a simple and cost-effective means of preventing antibiotic-associated diarrhoea.Aim To investigate whether eating live bio yogurt at the time of taking oral antibiotics can prevent antibiotic-associated diarrhoea.Design of study This study was a three-arm (bio yogurt, commercial yogurt, no yogurt) randomised controlled trial with double blinding between the two yogurt arms.Setting A single primary care general practice surgery in Hingham, Norfolk. The study population included all ages except babies.Method Patients aged over 1 year who required a 1-week course of antibiotics were included in the study. There was complete follow up for 369 patients. The intervention was the consumption of 150 ml of live strawberry-flavoured yogurt for 12 days, starting on the first day of taking the antibiotic. Diarrhoea was defined as ‘three or more loose stools per day over at least 2 consecutive days’ within 12 days of starting the antibiotics.Results Of the 120 patients in the no-yogurt group, 17 (14%, 95% confidence interval [CI] = 9.0 to 21.5) developed diarrhoea. Of the 118 given commercial yogurt, 13 (11%, 95% CI =6.6 to 17.9) developed diarrhoea; nine of the 131 patients (7%; 95% CI = 3.7 to 12.5) given bio yogurt developed diarrhoea (P = 0.17).Conclusion Overall, this study failed to demonstrate that yogurt has any effect on antibiotic-associated diarrhoea. ER -