13 Surprising Causes of Constipation
Vitamins in general won’t cause constipation, but certain components, such as calcium and iron, can be a problem.
"I would tell a patient to stop taking the iron [or calcium] unless they really need it and, if they do need it, I would put them on a stool softener to counteract that," says Dr. Ginsburg, who is a spokesperson for the American Gastroenterological Association.
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