Our Probiotics Main Article provides a comprehensive look at the who, what, when and how of Probiotics

Definition of Probiotics

Probiotics: live microorganisms (usually bacteria) that are similar to beneficial microorganisms found in the human gut that are taken as dietary supplements or found in foods. Most probiotics are bacteria similar to those naturally found in the intestine. Common examples are Lactobacillus and Bifidobacterium . They may occur naturally in yogurts and certain fermented foods. Probiotics have been used as treatment for various gastrointestinal conditions including irritable bowel syndrome and traveler's diarrhea.


Last Editorial Review: 8/28/2013

Search MedTerms:



Back to MedTerms online medical dictionary A-Z List
Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.