everything that we consume whether it is food medication (prescription and over-the-counter) or a supplement (vitamins and herbals) can have toxic side effects if you take too much. the side effects can vary per product. vitamin d is needed to aid in absorption of calcium. high levels of vitamin d can lead to high levels of calcium and symptoms include nausea vomiting constipation poor appetite weakness confusion and kidney stones. to treat toxicity seek medical advice and discontinue the use of the product until advised by your health care provider to resume use.
can i take too much vitamin d?