Vitamin d supplementation

[naveed123]

I took vitamin d3 orally 100000 IU After 15 days of vitamin consumption I felt symptoms of anxiety and heart palpitation What may be the reason

[Clutter]

Naveed123,

You've probably taken a toxic dose. I was prescribed 40,000iu daily x 14 days and I've not seen a higher dose prescribed. I would stop taking D3 and have a vitamin D test to check levels. In the UK toxicity is possible >250nmol/L.

[helvella Administrator Thyroid UK in reply to Clutter]

And some people cannot tolerate even a low dose such as 400 IU a day,

That sort of dosing looks like an outright mistake - maybe wrote 100,000 but meant 10,000?

[SeasideSusie Remembering in reply to helvella]

That's what I thought - 10,000 iu, was the 100,000 a typo naveed123

[RogerG]

The late Professor Robert Heaney, scientific adviser to GrassRootsHealth, told a conference about Vitamin D that I organised in 2010 that he was happy for any average weight adult to take 300,000 IU of Vitamin D in a month

Since then I have learned that anyone taking that amount should reduce their intake of calcium, say from milk or certain vegetables like kale

You may have taken 1,500,000 IU, so your Vitamin D levels are likely to be very high, but not dangerous

Return to your doctor and ask for a review.

I would stop taking the Vitamin D for a month, reduce your intake of calcium, stay out of the sun and drink lots of water.

The half-life of Vitamin D in the body is about 15 days, so your level should reduce to an acceptable level within 30 days. Search for a talk on UCSD TV by Professor Robert Heaney: What’s a Vitamin D Deficiency? Watch at 30 mins for information about "half-life"

Learn more about Vitamin D at:

Vitamin D Wiki

Vitamin D Council

Vitamin D Association

Grass Roots Health