Antibiotics disturb the beneficial bacteria that live in the gut and allow other harmful bacteria like C. difficile to take hold. Although some people infected with C. difficile show no symptoms, others suffer diarrhea or colitis. The so-called "good bacteria" or yeast in probiotic foods and supplements may offer a safe, low-cost way to help prevent C. difficile-associated diarrhea (CDAD). This finding is important because CDAD is expensive to treat.
CDAD cases were reported in 23 trials involving 4,213 adults and children. Probiotics taken in conjunction with antibiotics reduced the number of people who suffered diarrhea by 64%. Only 2% of participants who took probiotics had CDAD compared to nearly 6% of those who took placebo. In 26 trials reporting on adverse events, there were fewer adverse events in the group taking probiotics.
"In the short-term, taking probiotics in conjunction with antibiotics appears to be a safe and effective way of preventing diarrhea associated with Clostridium difficile infection," said lead researcher Bradley Johnston of The Hospital for Sick Children Research Institute in Toronto, Canada. "The introduction of some probiotic regimens as adjuncts to antibiotics could have an immediate impact on patient outcomes, especially in outbreak settings. However, we still need to establish the probiotic strains and doses that provide the best results, and determine the safety of probiotics in immunocompromised patients."
Although taking probiotics in combination with antibiotics helped to prevent CDAD, it did not reduce the number of people who were infected with C. difficile. "We think it's possible that probiotics act to prevent the symptoms of C. difficile infection rather than to prevent the infection itself," said Johnston. "This possibility needs to be investigated further in future trials, which should help us to understand more about how probiotics work."
Keywords for this news article include: Wiley, Clostridium Infections.
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