Florastor is used to treat problems of the lower gastrointestinal tract, according to WebMD. This includes problems such as irritable bowel syndrome and diarrhea. It is also used to treat lactose intolerance, vaginal yeast infections and infections of the urinary tract.
Florastor is also used to treat eczema, according to WebMD. It is taken orally and comes in forms where it is swallowed whole, chewed, added to liquids or sprinkled over food. Because Florastor is a probiotic, it may contain live cultures. Because these cultures can be killed by antibiotics, experts recommend taking Florastor two to three hours before or after a dose of antibiotics.