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Forte Shades's avatar

Is there a simple calculator to turn this into the number of vitamin d tablets you should take on a day.

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Evil Harry's avatar

It will depend on the strength of your tablets.

I/U is a standard measure for vitamin D3.

25mcg = 1000 IU

100 mcg = 4000 IU

125 mcg = 5000 IU

It's advantageous to take your D3 with vitamin K2 to ensure that the possibility of excess calcium is directed to the bones and not the blood vessels, though 4 or 5,000 IU shouldn't present a problem anyway.

Also, ensure it is D3, as D2 does not work as readily, nor stay in the body, whereas D3 does.

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Bartram's avatar

I'd note something 'obvious' but necessary I think -- only take multiple tablets to bring the dose up if they only contain vitamin D -- in particular, don't take multiple multivitamin tablets to bring up the vitamin D dose -- not all vitamins/minerals can be safely tolerated at higher doses.

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