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How can probiotics be bad for me?

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Because these good bacteria already exist in the body, probiotics are considered safe for most people. But they can trigger an allergic reaction. They might cause mild stomach problems, especially the first few days you start taking them. You might have stomach upset, gas, diarrhea, or bloating. Those symptoms usually go away after your body gets used to them.

If you have an immune system problem or another serious health condition, you may have a greater chance of issues.

SOURCES:

National Center for Complementary and Integrative Health: "Probiotics: In Depth."

Cleveland Clinic: "Probiotics."

University of Florida IFAS Extension: "Commonly Asked Questions about Probiotics and the Potential Benefits for Your Health."

Harvard Health Publications: "Health benefits of taking probiotics."

Mayo Clinic: "Do I need to include probiotics and prebiotics in my diet?"

Arthritis Foundation: "The Promise of Probiotics for Arthritis."

Reviewed by Jennifer Robinson on May 12, 2019

SOURCES:

National Center for Complementary and Integrative Health: "Probiotics: In Depth."

Cleveland Clinic: "Probiotics."

University of Florida IFAS Extension: "Commonly Asked Questions about Probiotics and the Potential Benefits for Your Health."

Harvard Health Publications: "Health benefits of taking probiotics."

Mayo Clinic: "Do I need to include probiotics and prebiotics in my diet?"

Arthritis Foundation: "The Promise of Probiotics for Arthritis."

Reviewed by Jennifer Robinson on May 12, 2019

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What is gastroparesis?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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