... The National Institutes of Health’s Office of Dietary Supplements warns that too much vitamin D can cause nausea and vomiting, muscle weakness, confusion, pain, dehydration, and kidney stones, among other side effects. These side effects only come from taking vitamin D supplements. ...
... The National Institutes of Health’s Office of Dietary Supplements warns that too much vitamin D can cause nausea and vomiting, muscle weakness, confusion, pain, dehydration, and kidney stones, among other side effects. These side effects only come from taking vitamin D supplements. ...