3 doctors weighed in:

What are the negative consequences of taking large doses of vitamin d?

3 doctors weighed in
Dr. Frederick Singer
Internal Medicine - Endocrinology
1 doctor agrees

In brief: Yes.

Large doses of vitamin d may cause high blood calcium and kidney stones.

In brief: Yes.

Large doses of vitamin d may cause high blood calcium and kidney stones.
Dr. Frederick Singer
Dr. Frederick Singer
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Dr. Randy Baker
Holistic Medicine

In brief: Yes, however...

It is bad to take too large a dose of anything but the question is what do you mean by large doses? Most adults need to take 5-8, 000 iu of vit d3 during fall & winter to attain optimal levels and one generally has to take 40, 000 iu/day for months to become toxic.
Many docs prescribe 50, 000 iu of d2 once a week but the d2 form is proven to be harmful so avoid this form!

In brief: Yes, however...

It is bad to take too large a dose of anything but the question is what do you mean by large doses? Most adults need to take 5-8, 000 iu of vit d3 during fall & winter to attain optimal levels and one generally has to take 40, 000 iu/day for months to become toxic.
Many docs prescribe 50, 000 iu of d2 once a week but the d2 form is proven to be harmful so avoid this form!
Dr. Randy Baker
Dr. Randy Baker
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