probiotic

Noun (2)

1. a beneficial bacterium found in the intestinal tract of healthy mammals; often considered to be a plantSynonyms: probiotic bacteriumprobiotic microfloraprobiotic floraType of bacteria, bacteriumKinds acidophilus, Lactobacillus acidophilus
2. A dietary supplement containing live bacteria, usually taken after a course of antibiotics to replenish the damaged gastrointestinal flora.“The first commercially sold dairy-based probiotic was Yakult, a fermented milk with added Lactobacillus casei, in 1935.”Type of dietary supplement