Doctor insights on:
How Does Your Body Absorb Vitamin D
Only minutes: In most cases b complex will be absorbed quite quickly. One way of verifying this is to see how long it takes between taking a potent b complex and how long it takes to see your urine turn dark yellow & smell like vitamins (caused by b1 & b2). For them to appear in your urine they must be absorbed into your bloodstream and then be filtered by your kidneys, but this can happen within an hour. ...Read more
Food BestSource Ca+2: Yes, D3 needed for absorption & often ? in US, but best measure vit. D3 concentration; optimal in the 70-80 ng/ml range. Sun tends to trigger conversion of a little cholesterol in skin to Vit D, then converted in liver to D2 & by kidneys & other tissues to D3. D3 impt for Ca absorption, bone & muscle strength + immune function. Best source food & if D3 conc good, unlikely need Ca+2 supplements. ...Read moreSee 2 more doctor answers
Excreted in urine ;: The government requirement for minimum levels of vit d is too low. This is the level you need to prevent rickets! you need to have your vitamin d level checked in your blood. When you replace vitamin d with supplements you need to take vitamin d3. Excess vit d that is not absorbed will go out in your stool and urine. ...Read more
Protects..: From photo-aging, also this effects is much better applying oil to the skin. Also a skin softener! ...Read more
Vitamin d deficiency - " your digestive tract can not adequately absorb vitamin d", what does that mean?
Vit D: Vitamin d is well absorbed from the GI tract usually. In vitamin d deficiency there is not enough vitamin d in the diet and because of poor sun exposure and decrease intensity of sun rays in areas where the the rays are oblique ( north os south ) the skin cannot make enough. The production of vitamin d by the skin decreases with age. ...Read moreSee 1 more doctor answer
Quick: It is absorbed within one to two hours. ...Read more
Depends: If you have had your Vit D level tested, your doctor has probably given you some recommendations based on that. Encourage him to write prescription strength if your insurance pays for i (sometimes prescription strength, if generic, can be cheaper than over the counter too, even if you don't have insurance). Your Doc's advice is best. Too much/too little is not good. ...Read moreSee 2 more doctor answers
24 hours at most: Vitamin c is a water-soluble vitamin. It is absorbed into the bloodstream from the intestine, distributes evenly throughout the circulation, and is then excreted into the urine through the kidneys. Zinc is slightly more complicated, but should also pass into your urine rather quickly, and it should be basically gone within a few hours. I'd say it is a safe assumption that both are gone in 24h. ...Read more
Vitamin D absorption: People who have had intestinal (gut) surgery may not absorb vitamin D as well. More commonly, vitamin D levels are more difficult to raise in obese people because fat tissue holds onto some of the vitamin D. If level is low, don't try to increase supplement dose without telling your doctor because too much vitamin D can be toxic. You will have periodic blood levels to ensure levels reach goal. ...Read moreSee 1 more doctor answer
How much Vitamin D I should take to raise my Vitamin D from 19 to a healthy level? How long I need to supplement?
5000IU daily: at a minimum. Many physicians including myself would treat level of 19 with 50,000 units twice weekly for 2 months, followed by 5000 units daily indefinitely. Thanks for trusting HealthTap! ...Read more
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