Probiotics > Safety

Nutritional Supplement

Probiotics

Possible Deficiencies

People using antibiotics, eating a poor diet, or suffering from diarrhea are more likely to have depleted colonies of friendly bacteria.

Side Effects

There are at least nine case reports of severe, invasive (internal) fungal infections developing in people treated with the yeast organism Saccharomyces boulardii. All of these people were debilitated or had impaired immune function prior to receiving Saccharomyces boulardii.36,37 Severe infection (sepsis) due to lactobacilli has also occurred in people with impaired immune function.38 People with diseases of the heart valves should not take probiotics prior to dental procedures, as doing so might lead to an infection of the heart valve.39

References

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27. Aoun A,Darwish F, Hamod N. The Influence of the Gut Microbiome on Obesity in Adults and the Role of Probiotics, Prebiotics, and Synbiotics for Weight Loss. Prev Nutr Food Sci 2020 Jun;25(2):113–123.

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34. Gaby, AR. Nutritional Medicine. Concord, NH: Fritz Perlberg Publishing, 2011.

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36. Bassetti S, Frei R, Zimmerli W. Fungemia with Saccharomyces cerevisiae after treatment with Saccharomyces boulardii. Am J Med 1998;105:71-2.

37. Perapoch J, Planes AM, Querol A, et al. Fungemia with Saccharomyces cerevisiae in two newborns, only one of whom had been treated with Ultra-Levura. Eur J Clin Microbiol Infect Dis 2000;19:468-70.

38. Mehta A, Rangarajan S, Borate U. A cautionary tale for probiotic use in hematopoietic SCT patients - Lactobacillus acidophilus sepsis in a patient with mantle cell lymphoma undergoing hematopoietic SCT. Bone Marrow Transplant 2013;48:461–62.

39. Kato K, Funabashi N, Takaoka H, et al. Lactobacillus paracasei endocarditis in a consumer of probiotics with advanced and severe bicuspid aortic valve stenosis complicated with diffuse left ventricular mid-layer fibrosis. Int J Cardiol 2016;224:157–61.