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how long does it take vitamin d3 to work

A 41-year-old member asked:
Dr. David Sneid
40 years experience Endocrinology
Vitamin D: Is fat soluble and takes approx. 3 mos to reach equilibrium with normal daily replacement, and the same length of time to be fully metabolized out of ... Read More
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Dr. Yash Khanna
56 years experience Family Medicine
Depends on level: If you have normal blood level of 25 hydroxy vit d level should be more than30nanogrm per milliliter.If it is normal that means you are getting enough ... Read More

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A 27-year-old male asked:
Dr. Jeff Livingston
21 years experience Obstetrics and Gynecology
Immediately : Vitamins will start being absorbed into your system right after you swallow them. I am not sure what you mean by "working" but they will be in your sy ... Read More
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1 thank
A 22-year-old male asked:
Dr. Susan Madonna
20 years experience Family Medicine
Ca++ and Vit D: Current guidelines recommend a total daily Calcium intake of 1000mg (including foods that contain calcium and whatever supplement you are taking) and ... Read More
1
1 thank
A 33-year-old member asked:
Dr. Yash Khanna
56 years experience Family Medicine
Same day: If you have normal gastrointestinal system you will absorp the same day.But absorption is variable depends whether you are taking with calcium which h ... Read More
1
1 thank
A 61-year-old female asked:
Dr. Jeffrey Kass
27 years experience Podiatry
You would : Have to have occasional blood work to determine what your levels are. Vit d in high doses can be toxic.
A 38-year-old member asked:
Dr. David Sneid
40 years experience Endocrinology
Vitamin D: Is fat soluble and takes approx. 3 mos to reach equilibrium with normal daily replacement, and the same length of time to be fully metabolized out of ... Read More
A 27-year-old male asked:
Dr. Louise Andrew
A Verified Doctor answered
A US doctor answered Learn more
Recheck in 4-6 mos: with another D-3 level. It should certainly have normalized by then on this dose.
1
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A 38-year-old male asked:
Dr. Randy Baker
39 years experience Holistic Medicine
Try 5000 iu/day: Most adults need to take 5-8000 iu/day to achieve optimal levels, which are 50-80. Everyone in US should take Vit D3 in fall and winter months as it ... Read More
1
1 thank
A 20-year-old male asked:
Dr. Dariush Saghafi
32 years experience Neurology
Need to monitor: Although that is actually not an uncommon formulation to find OTC for calcium supplements there is a theoretical risk of becoming hypercalcemic. If n ... Read More
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1 thank
A 24-year-old female asked:
Dr. Michael Kleerekoper
A Verified Doctor answered
A US doctor answered Learn more
Vitamin D: 1000 units of vitamin D taken once a day is what you need. I don't understand why a doctor would prescribe 2000 units. Normal range for vitamin D is n ... Read More

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