reviewing a simple blood test report with a patient, vitamin D supplement bottle on the desk with no brand label, clean clinic environment, no readable text.
The Main Warning: Too Much Vitamin D Can Be Harmful
The biggest risk of taking too much vitamin D is a buildup of calcium in the blood, called hypercalcemia. The NHS warns that taking too many vitamin D supplements over a long period can cause too much calcium to build up in the body, which may weaken bones and damage the kidneys and heart.