Probiotics help move food through your gut. Researchers are still trying to figure out which are best for certain health problems. Some common conditions they treat are:
Irritable bowel syndrome
Inflammatory bowel disease (IBD)
Infectious diarrhea (caused by viruses, bacteria, or parasites)
Antibiotic-related diarrhea
There is also some research to show they help with problems in other parts of your body. For example, some people say they have helped with:
Skin conditions, like eczema
Urinary and vaginal health
Preventing allergies and colds
Oral health