 [ Symptoms ] i have medical problems with my right knee i need to be in treatment but do not have insurance  how can i get low cost insurance to pay to get my treatment asap [ Disease ] 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