You are unlikely to get too much vitamin D through diet or sunlight. However, when taking supplements, keep in mind that the ...
The tolerable upper limit for vitamin D in adults is 100 micrograms (4,000 IU). Taking amounts above this may be harmful. High levels of vitamin D in the body can lead to dangerously high calcium ...
Vitamin D is found in some calcium supplements ... says Rosenbloom. The upper tolerable limit is 100 mg day, and in pill form it's easy to get that much. "In high doses, people have problems ...