This delicate ecosystem can be disturbed by many things including antibiotics and illness. The bacteria chosen for Pro-100 Ultra are all proven to reach the gut intact and are antibiotic resistant. Ingredients: Lactobacillus acidophilus, Lactiplantibacillus plantarum, Lacticaseibacillus casei, Limosilactobacillus reuteri, Bifidobacterium bifidum, Bifidobacterium animalis subsp.
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