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vitamin absorption rate

A 35-year-old member asked:
Dr. Arthur Heller
43 years experience Gastroenterology
Usually excellent: Often the last thing to go with intestinal disease. Sometimes chewables better tolerated. Higher doses may not be better, can cause GI upset, high d ... Read More
Dr. Bryan Levey
27 years experience Pediatrics
What about it?: Please ask a more complete question.

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A 67-year-old male asked:
Dr. Milton Alvis, jr
41 years experience Preventive Medicine
Immediately Whenever: All vitamins are single molecules so plentiful in most foods that humans have not retained all genes/proteins to manufacture out of other molecules, t ... Read More
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A 32-year-old male asked:
Dr. Rex Mahnensmith
A Verified Doctor answered
A US doctor answered Learn more
Vit D3 absorption: Wow. Excellent question! Scientific evidence shows that vit D absorption itself is not strongly influenced by vit K1 or K2 or K3. Data do show that ... Read More
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A 48-year-old member asked:
Dr. Derrick Lonsdale
73 years experience Preventive Medicine
Very slow: Vitamin d is really a hormone because it is made in skin from the action of sunlight, the main source of our vifamin d. It is absorbed poorly when tak ... Read More
A 39-year-old member asked:
Dr. Thomas Knecht
A Verified Doctor answered
A US doctor answered Learn more
No: Hi. No, calcium is not needed for vit. D absorption, but vit. D is a fat soluble vitamin, so bile is definitely helpful in vit. D absorption. So takin ... Read More
A 21-year-old female asked:
Dr. Michael Dugan
Specializes in Hematology
Acid has a profound: Effect on iron. Acid is better. Not an issue with b12, as the issue is intrinsic factor from the stomach which is a cofactor in B12 absorption.
A 40-year-old member asked:
Dr. Ahsan Bhatti
24 years experience Gastroenterology
Celiac disease, : Celiac disease crohn's disease, vegetarian diet, pernicious anemia.
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A 46-year-old member asked:
Dr. Derrick Lonsdale
73 years experience Preventive Medicine
There are : Water soluble and fat soluble vitamins. Fat soluble means just that for it determines their absorption into the body.
A 25-year-old female asked:
Dr. Randy Baker
40 years experience Holistic Medicine
OK, to a degree but:: Calcium ; magnesium are often packaged together both in supplements ; foods. They compete a bit; calcium may reduce mag. Absorption but mag. Does not ... Read More
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A 32-year-old male asked:
Dr. Philip Kern
43 years experience Endocrinology
Malabsorption: If there are problems with nutrient absorption in the GI tracts, Vit D is sometimes not absorbed well. There are many causes, including GI surgery, i ... Read More
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