When you get your 25-Hydroxy Vitamin D blood level, the normal range is usually reported as 32 to 100 ng/ml. However, researchers are now beginning to believe that desired level of vitamin D should be over 50 ng/ml and some are recommending that it should be greater than 60 ng/ml. Depending on your level of vitamin D you will need to first get your level into the desired range. However, I would at least recommend that you try to achieve a blood level above 50 ng/ml.
Your personal physician should actually prescribe the amount of increased vitamin D that you will need to bring your vitamin D up to the proper level. It should then be rechecked to be sure that this goal has been accomplished. I work with the members of my online medical practice at www.drraystrand.com to achieve this goal through email or phone consultation and bloodwork that I can order for them. Once you have achieved this goal, you then should supplement with 1,000 to 1,200 IU of vitamin D3 daily.
Source: Dr. Strand Health Nuggets (newsletter@Bionutrition.org)