2

votes

Vitamin D dose and timing?

Answered on September 12, 2014
Created September 08, 2010 at 1:33 PM

Just a short question on Vit D dose. In Belgium, the only affordable Vit D is one that comes in ampoules of 25.000 IU (???1 per ampoule). In the winter, I usually take about 2/week or 3 in 2 weeks.

I know that the best way to know is to test my Vit D levels, but I'm not really concerned about this. My question is: does it matter if I take it only 2 times per week instead of daily (meaning on days without sunshine?).

My guess is that it doesn't matter that much, since Vit D is fat soluable and for people spending a lot of time outdoors, they also have clouded and sunny days?

Or am I wrong?

Thanks.

685e3c967e63b4eacccf02628fd9a3ac

(1026)

on February 15, 2012
at 03:54 PM

Pieter, my doctor recommended these D-cure supplements once a week and my level was 9ng/ml... That being said, why don't you buy this stuff on iHerb? If you pick airmail, you can get 360 capsules with 5K IU of D3 for 20$ including shipping. Besides, the vitamin D you're talking about is made with canola oil, while the one from iHerb is made with olive oil : http://www.iherb.com/Healthy-Origins-Vitamin-D3-5-000-IU-360-Softgels/18335?at=0

1a8020e101199de55c1b3b726f342321

(1973)

on September 08, 2010
at 11:30 PM

Stephen: Hollick's seminal paper http://www.nature.com/jid/journal/v77/n1/full/5615643a.html

4b97e3bb2ee4a9588783f5d56d687da1

(22923)

on September 08, 2010
at 10:28 PM

Where can I read more on this?

F5698e16f1793c0bb00daea6a2e222a4

(678)

on September 08, 2010
at 08:42 PM

Poliquin is also selling it, right along side "lean legs fat burning cream for women"

100e84644afcdc9fbcfc079b8ab9782b

(-2)

on September 08, 2010
at 07:29 PM

Oops, that was vitamin A. Sorry!

89e238284ccb95b439edcff9e123671e

(10299)

on September 08, 2010
at 03:09 PM

Yep, cholecalciferol.

77732bf6bf2b8a360f523ef87c3b7523

(6157)

on September 08, 2010
at 02:15 PM

Are you sure this is D3 and not D2?

47a42b6be94caf700fce9509e38bb6a4

(9647)

on September 08, 2010
at 02:08 PM

Haha, that's funny. I think I'm going to take a 1-million IU dose of vitamin D one of these days ... +1

89e238284ccb95b439edcff9e123671e

(10299)

on September 08, 2010
at 01:56 PM

thanks, I didn't worry about overload toxicity, more about efficiency of daily versus twice a week. But it's good the see the those numbers.

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5 Answers

5
4b97e3bb2ee4a9588783f5d56d687da1

on September 08, 2010
at 01:52 PM

From Vitamin D Council:

Like most medication, cholecalciferol is certainly toxic in excess, and, like Coumadin, is used as a rodent poison for this purpose. Animal data indicates signs of toxicity can occur with ingestion of 0.5??mg/kg (20,000??IU/kg ), while the oral LD50 (the dose it takes to kill half the animals) for cholecalciferol in dogs is about 88??mg/kg, or 3,520,000??IU/kg. This would be equivalent to a 110-pound adult taking 176,000,000??IU or 440,000 of the 400 unit cholecalciferol capsules.

The standard procedure for people low in D is to give them a huge shot once a week... And as you said, it stores in fat and we use its needed. Those megadoses have been shown to regulate daily levels with a weekly shot, I wouldn't worry about it :)

89e238284ccb95b439edcff9e123671e

(10299)

on September 08, 2010
at 01:56 PM

thanks, I didn't worry about overload toxicity, more about efficiency of daily versus twice a week. But it's good the see the those numbers.

47a42b6be94caf700fce9509e38bb6a4

(9647)

on September 08, 2010
at 02:08 PM

Haha, that's funny. I think I'm going to take a 1-million IU dose of vitamin D one of these days ... +1

0
59e818af2184847f09c8a63a45adcdbb

on February 15, 2012
at 03:22 PM

What about what time of day to take the vitamin D? Ive been taking it at midday thinking thats when i should be getting sunshine, but Rob Wolfe mentioned in a recent podcast that he takes his later(in evening i think he said), i guess because D created via sun and skin may take time to appear in the bloodstream...

0
65125edd5aafad39b3d5b3a8b4a36bb7

on September 08, 2010
at 08:10 PM

One thing to consider is that the human body will naturally taper production of vitamin-D based on quantity of exposure to UV sunlight. As sunlight exposure results in more vitamin-D than is needed, production will drop off and of course melanin will increase skin pigmentation.

This however does not happen with supplemented vitamin-D3.

1a8020e101199de55c1b3b726f342321

(1973)

on September 08, 2010
at 11:30 PM

Stephen: Hollick's seminal paper http://www.nature.com/jid/journal/v77/n1/full/5615643a.html

4b97e3bb2ee4a9588783f5d56d687da1

(22923)

on September 08, 2010
at 10:28 PM

Where can I read more on this?

0
1a8020e101199de55c1b3b726f342321

(1973)

on September 08, 2010
at 08:06 PM

Poliquin is all about a bolus dose of vitamin D for deficient individuals. 30k to 100k IU, twice a week.

http://www.charlespoliquin.com/ArticlesMultimedia/Articles/article.aspx?ID=230

F5698e16f1793c0bb00daea6a2e222a4

(678)

on September 08, 2010
at 08:42 PM

Poliquin is also selling it, right along side "lean legs fat burning cream for women"

-1
100e84644afcdc9fbcfc079b8ab9782b

on September 08, 2010
at 07:28 PM

Eat some polar bear liver :) (google it)

100e84644afcdc9fbcfc079b8ab9782b

(-2)

on September 08, 2010
at 07:29 PM

Oops, that was vitamin A. Sorry!

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