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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 am 35 year old male. Was diagnosed with low Vitamin D. Value was 7.9 ng/mL. Doctor prescribed Vitamin D3 (cholecalciferol) 50,000 IU Softgel capsule each to be taken one a week for 16 weeks. Perhaps its high dose but I have to follow it as it is prescribed by doctor. How many weeks(a capsule a week) later I should try to test check my levels again with this dose? My B12 value was 229 pg/ml and doctor also prescribed a daily tablet for B12 suppliment for a month. Plus I am also taking Lipitor 20 mg tablets for high cholestrol (LDL) once a day.

Ask the Vitamin D Council

Asked by  Yasir on January 14, 2016


  • Yasir
     Yasir on

    See title

    Answered by  Yasir on

  • IAW
     IAW on

    Your level is very low. There is no standard for rechecking but I would wait at least 3 months. I would also keep the following in mind for the future.
    Taking the 50,000iu once a week is alright but it is better to take Vitamin D daily. So once you are done with the doctor’s once a week pills, then you should switch to taking it daily. Whatever you do, unless your sun exposure habits can change and you live close to the equator, you must take Vitamin D all the time. If you stop then your levels will revert back to being low. We recommend a blood level of 50ng/ml or slightly higher in order to be healthy. If you are of average weight, about 150lbs, it will probably take 5000iu a day to maintain your level. IF you weigh more, than you may have to take more. (If you take 50,000iu and divide by 7 days, it equals about 7000iu a day.)
    You should read http://www.vitamindcouncil.org/about-vitamin-d/vitamin-d-and-other-vitamins-and-minerals/. It is important.

    Answered by  IAW on