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Information on the latest vitamin D news and research.

Find out more information on deficiency, supplementation, sun exposure, and how vitamin D relates to your health.

Hi I was adviced to take 15000 units, but when I take over 8000 my heat beat starts to race? I have tired taking k2 and calcium but to no avail. Thanks.

Ask the Vitamin D Council

Asked by  Gregorg on October 14, 2014

  • Jeff Nicklas
     Jeff Nicklas on


    You may be more sensitive to vitamin D. If you are experiencing discomfort from taking more than 8,000 IU/day, then it would be best to try and lower your dose to one which you can take and not feel uncomfortable.

    If you do change your dose, it usually takes about a month to see changes in your level.

    Answered by  Jeff Nicklas on

  • IAW
     IAW on

    Do you take any medications for example thyroid medicine? The answer to that question may influence how I would quite possible interpret the “racing heart”!

    Answered by  IAW on