Q: my b12 level was <109 pmol/l. i took half of the vitamin course, 500 mg daily for about a month, then stopped and tested two months later and the result is 133. is this normal absorption given finishing half of the course? if not, what's the cause?

Malabsorption: Your stomach and intestine may not be absorbing B12 normally. You may need to get injection of vitamin B12. You may try taking sub-lingual form of B12 for three months and repeat the test to see if you may be able to avoid getting injections. Visit this site for info: https://www.drugs.com/cdi/cyanocobalamin-b12-sublingual-tablets.html

Q: how long after coffee do i take my vitamins so as not to interfere with absorption?

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, typically missing just 1 step. Food is a complex mix of billions of molecules &amp; body&#x27;s digestive process deals with the absorption complexities. Yet some people promote fear of ingesting some molecules not in optimal order; rarely a significant issue.

Q: do we need to take vitamin k2 with vitamin d3 for optimum absorption of d3?or, d3 alone is enough?

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 D3 is superior to D2 in repleting D deficiency. Vit K2 importantly activates calcium uptake into bone matrix. K2 elevates osteocalcin = a "bone building" compound. K2 also elevates matrix GLA, which inhibits vasc calcification. D3 + K2 = YES!

Q: what is the absorption time of vitamin d3 supplements?

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 taken in the form of d3 but is essential for most people in the northern or southern hemisphere because of our limited sun edposure and the use of sun screens when we are exposed to the sun.

Q: vitamin d is needed for calcium absorption. so is calcium needed for vitamin d absorption?

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 taking vit. D with a meal does help its absorption.

Q: effect of acid secretion on absorption of iron and vitamin b12?

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.

Q: is it ok to take calcium, vitamin d3 and magnesium together? or do calcium and magnesium compete for absorption?

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 seem to reduce cal. Absorption. Those low in mag. Have difficulty absorbing cal.; if deficient in mag. It may be best to take it separately. http://www.nutraceuticalsworld.com/contents/view_breaking-news/2011-09-14/magnesium-is-key-to-calcium-uptake/.

Q: is the absorption of vitamin d3 guaranteed when taken as a supplement? what brand of vitamin d3 is best in the market?

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, inflammatory bowel disease, sprue, etc. In normal people, it is well absorbed.

Q: does fat content increase the absorption of vitamin d2, or this only apply to d3? does vitamin d2 interact with b12? how do i optimize d2 absorption?

Optimizing D absorpt: Vit D3 is superior to D2. Both are fat soluble. Absorption is enhanced with food and fat. To optimize effects, be sure you have vit K2 going in as well -- approx 100 mcg of vit K2 for every 1000 iu of D3 is appropriate.

Question 1

multi vitamin absorption ?

Accepted Answer

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 dose c can cause kidney stones, diarrhea.
Most people don't need megadoses, many don't need any supplement. Iron deficiency in women, vitamin d deficiency not rare, special populations may need supplementation.

Question 2

my b12 level was <109 pmol/l. i took half of the vitamin course, 500 mg daily for about a month, then stopped and tested two months later and the result is 133. is this normal absorption given finishing half of the course? if not, what's the cause?

Accepted Answer

Malabsorption: Your stomach and intestine may not be absorbing B12 normally.  You may need to get injection of vitamin B12.  You may try taking sub-lingual form of B12 for three months and repeat the test to see if you may be able to avoid getting injections.
Visit this site for info: https://www.drugs.com/cdi/cyanocobalamin-b12-sublingual-tablets.html

Question 3

how long after coffee do i take my vitamins so as not to interfere with absorption?

Accepted Answer

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, typically missing just 1 step. Food is a complex mix of billions of molecules &amp; body&#x27;s digestive process deals with the absorption complexities. Yet some people promote fear of ingesting some molecules not in optimal order; rarely a significant issue.

Question 4

do we need to take vitamin k2 with vitamin d3 for optimum absorption of d3?or, d3 alone is enough?

Accepted Answer

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 D3 is superior to D2 in repleting D deficiency.  Vit K2 importantly activates calcium uptake into bone matrix. K2 elevates osteocalcin = a "bone building" compound. K2 also elevates matrix GLA, which inhibits vasc calcification. D3 + K2 = YES!

Question 5

what is the absorption time of vitamin d3 supplements?

Accepted Answer

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 taken in the form of d3 but is essential for most people in the northern or southern hemisphere because of our limited sun edposure and the use of sun screens when we are exposed to the sun.

Question 6

vitamin d is needed for calcium absorption. so is calcium needed for vitamin d absorption?

Accepted Answer

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 taking vit. D with a meal does help its absorption.

Question 7

effect of acid secretion on absorption of iron and vitamin b12?

Accepted Answer

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.

Question 8

is it ok to take calcium, vitamin d3 and magnesium together? or do calcium and magnesium compete for absorption?

Accepted Answer

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 seem to reduce cal. Absorption. Those low in mag. Have difficulty absorbing cal.; if deficient in mag. It may be best to take it separately.
http://www.nutraceuticalsworld.com/contents/view_breaking-news/2011-09-14/magnesium-is-key-to-calcium-uptake/.

Question 9

is the absorption of vitamin d3 guaranteed when taken as a supplement? what brand of vitamin d3 is best in the market?

Accepted Answer

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, inflammatory bowel disease, sprue, etc.   In normal people, it is well absorbed.

Question 10

does fat content increase the absorption of vitamin d2, or this only apply to d3? does vitamin d2 interact with b12?

how do i optimize d2 absorption?

Accepted Answer

Optimizing D absorpt: Vit D3 is superior to D2.  Both are fat soluble.  Absorption is enhanced with food and fat. To optimize effects, be sure you have vit K2 going in as well -- approx 100 mcg of vit K2 for every 1000 iu of D3 is appropriate.

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Doctor answers about:

Vitamin absorption rate

A member asked:

Multi vitamin absorption ?

A member asked:

My b12 level was <109 pmol/l. i took half of the vitamin course, 500 mg daily for about a month, then stopped and tested two months later and the result is 133. is this normal absorption given finishing half of the course? if not, what's the cause?

A member asked:

How long after coffee do i take my vitamins so as not to interfere with absorption?

A member asked:

Do we need to take vitamin k2 with vitamin d3 for optimum absorption of d3?or, d3 alone is enough?

A member asked:

What is the absorption time of vitamin d3 supplements?

A member asked:

Vitamin d is needed for calcium absorption. so is calcium needed for vitamin d absorption?

A member asked:

Effect of acid secretion on absorption of iron and vitamin b12?

A member asked:

Is it ok to take calcium, vitamin d3 and magnesium together? or do calcium and magnesium compete for absorption?

A member asked:

Is the absorption of vitamin d3 guaranteed when taken as a supplement? what brand of vitamin d3 is best in the market?

A member asked:

Does fat content increase the absorption of vitamin d2, or this only apply to d3? does vitamin d2 interact with b12? how do i optimize d2 absorption?

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