Probiotics

http://www.pdrhealth.com/drug_info/nmdrugprofiles/nutsupdrugs/pro_0034.shtml

http://www.mayoclinic.com/health/probiotics/AN00389
Mayo Clinic gastroenterologist Michael Picco, M.D., and colleagues answer select questions
from readers.
Answer
The term "probiotics" refers to dietary supplements or foods that contain beneficial, or "good,"
bacteria normally found in your body. Although you don't need probiotics to be healthy, these
microorganisms may assist with digestion or help protect against some harmful bacteria.

There is growing public and scientific interest in probiotics. Researchers are studying
whether probiotics taken as foods or supplements can help treat or prevent illness, such as:

Vaginal yeast infections
Diarrhea following treatment with certain antibiotics
In addition, recent research suggests a number of new potential uses for probiotics. One study
in Sweden found that a group of employees who were given probiotics missed less work due to
illness than did employees who were not given probiotics.
Other studies have found probiotics
to be helpful in managing the signs and symptoms of irritable bowel syndrome (IBS).

http://www.usprobiotics.org/basics/