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Special Precautions & Warnings:Pregnancy and breast-feeding: Yogurt seems to be safe in food amounts and might be safe when applied intravaginally during pregnancy. Pregnant women involved in a small study reported no side effects.
Yogurt seems to be safe in breast-feeding women when used in normal food amounts, but researchers haven't adequately studied the safety of intravaginal use of yogurt during breast-feeding. It's best to avoid intravaginal use if you are nursing.
Weakened immune system: There is some concern live bacteria in yogurt might reproduce unchecked, causing illness in people with weakened immune systems, such as people with HIV/AIDS or organ transplant recipients. Lactobacillus in yogurt has caused disease, but rarely, in people with weakened immune systems. To be on the safe side, if you have a weakened immune system, avoid eating large amounts of yogurt that contain live bacteria for prolonged periods of time without advice from your healthcare professional.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.