Yes. When vitamin D is consumed as a supplement, there is no shut-off mechanism and an overdose can lead to abnormal calcium metabolism with symptoms such as nausea, constipation, weakness and bone pain.
If you have any of these symptoms you should stop taking what I'm assuming is a Vit. D supplement - it's hard to OD on Vit. D in hits natural state.
If any of your symptoms are bothersome or serious you should consult with your doctor or an ER immediately.
I hope this helps,
Elizabeth
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