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by zamfi 2115 days ago
> We get 20,000 iu of Vitamin D in like 15 to 30 minutes of sun (if you're pale skinned). Pretty sure taking 5,000 iu every day isn't going to be harmful.

You cannot overdose on vitamin D from sun exposure because the metabolic process that creates it has a concentration limit.

You CAN overdose (experience toxicity) from too much supplementation. They are not equivalent.

Some people do get toxic side effects from supplementing 5000 IUs a day, over long periods of time.