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Fact or Fiction? Vitamins Can Have Side Effects

Fact: Because vitamins are natural, you may think they don't have side effects. But just like some of the medications you may be taking, vitamins may have side effects, too. "Sometimes we see gastrointestinal issues such as stomach upset, diarrhea or constipation or your urine may change colors or have a funny smell," says Knobel. You may be more likely to have side effects if you take more than the recommended dosage. If you recently started taking a vitamin and are experiencing new symptoms, talk to your doctor.

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