Medically reviewed by  Robert Burakoff, MD, MPH

Probiotics are live bacteria and yeast that are good for you, especially your digestive tract. These naturally occurring microorganisms are considered “good” in that they keep “bad” bacteria and fungus in check. They can even promote vaginal health by preventing the overgrowth of microbes that cause yeast infections and bacterial vaginosis.

Probiotics are found in yogurt and fermented foods but can also be purchased as dietary supplements, skin care products, and vaginal suppositories.

The most common types of probiotics sold in the United States are Lactobacillus and Bifidobacterium.1 The increasing popularity of these products has led to misconceptions about what they can and cannot do and whether they can deliver the promised results.

This article discusses probiotic benefits for digestive and reproductive health. It also details the side effects of probiotics.

Health Benefits of Probiotics: