Can probiotics cause problems?

They may trigger allergic reactions, and may also cause mild stomach upset, diarrhea, or flatulence (passing gas) and bloating for the first few days after starting to take them. There are certain people who need to use caution when using probiotic supplements. There is a risk of infection in some people.

Are any probiotics FDA approved?

Probiotics are typically sold as dietary supplements and do not require FDA approval unless they make health claims. The FDA has not approved any health claims for probiotics sold in the United States.

Do probiotics make it to the gut?

To make it to the intestine, though, probiotics must first pass through the stomach, a hostile acidic environment that can kill these beneficial bacteria. Now, scientists report the development of a protective gel sphere that may offer probiotics a safer route.