What Is the Best Probiotic to Prevent Diarrhea?

Lactobacillus GG and S. boulardii probiotics are most demonstrably effective at preventing diarrhea, states the Journal of Clinical Gastroenterology. In addition to preventing diarrhea, probiotics derived from lactic acid bacteria are effective in treating diarrhea, reducing the duration by one day, according to data published on PubMed Health.

Diarrhea is a frequent side effect of antibiotics because the medications kill bacteria in the gut that regulate digestion, states WebMD. Up to 30 percent of patients treated with antibiotics suffer from diarrhea, notes the Journal of the American Medical Association. Saccharomyces boulardii and lactobacillus probiotics are effective for diarrhea prevention, as stated by WebMD. Probiotics administered prior to taking antibiotics and with antibiotics reduce the incidence of this side effect in both adults and children.

For diarrhea that has already struck, different probiotics work well, states WebMD. In children, a combination of probiotics may be the best approach, with lactobacillus rhamnosus, lactobacillus reuteri, and saccharomyces boulardii recommended. Evidence is lacking for the use of probiotics for people suffering from long term diarrhea related to eating or drinking something contaminated, but the lactobacillus acidophilus and bifidobacteria bifidum probiotics are best documented as effective. In aggregate, probiotics appear to have some effect on diarrhea illnesses, with 22 percent of those studied recovering more quickly from diarrhea after taking probiotics, according to PubMed Health.