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Dr. Bob is Robert Hsiung, MD,
bob@dr-bob.orgShown: posts 1 to 12 of 12. This is the beginning of the thread.
Posted by Lamdage22 on May 29, 2015, at 11:48:03
What is a good vitamin D3 maintenance dosage?
Posted by Christ_empowered on May 29, 2015, at 13:33:05
In reply to What is a good vitamin D3 maintenance dosage?, posted by Lamdage22 on May 29, 2015, at 11:48:03
I dunno man...I take 5,000 IU/day. I take 2 anticonvulsants, so I went for a bigger daily dose.
Posted by linkadge on July 10, 2015, at 18:08:25
In reply to Re: What is a good vitamin D3 maintenance dosage?, posted by Christ_empowered on May 29, 2015, at 13:33:05
I wouldn't take more than 200 - 400 IU a day as a supplement. Unless, of course you eat no dairy and get little sunlight.
Linkadge
Posted by Lamdage22 on September 9, 2015, at 15:35:26
In reply to What is a good vitamin D3 maintenance dosage?, posted by Lamdage22 on May 29, 2015, at 11:48:03
Well, the winter is coming soon so i would say during the winter i get almost no sunlight at all.
I stopped D3 in the summer.
I did feel last winter i had very little seasonal affective disorder when i took the D3 which was great. The winter used to always set me back miles mentally.
I took 20 000 IU twice a week so about 5 thousand IU a day.
Posted by LostBoyinNC46 on December 9, 2015, at 1:00:49
In reply to Re: What is a good vitamin D3 maintenance dosage?, posted by Christ_empowered on May 29, 2015, at 13:33:05
50,000 IU OTC vitamin D once a week, taken with a high fat meal. Vitamin D is a fat soluble vitamin.
Posted by Larry Hoover on December 25, 2015, at 15:20:48
In reply to What is a good vitamin D3 maintenance dosage?, posted by Lamdage22 on May 29, 2015, at 11:48:03
Vitamin D3 supplementation should be adjusted on the basis of body weight.
http://www.ncbi.nlm.nih.gov/pubmed/22262154
Not shown in this abstract, but one of the authors (Dr. Heaney) said the formula to obtain 25(OH)D levels of >40 ng/ml is 70-80IU/kg/day. (35IU/pound/day). So, a 200 lb. person should take 7000IU/day, as a simple example.
Lar
Posted by SLS on December 25, 2015, at 16:49:39
In reply to Re: What is a good vitamin D3 maintenance dosage?, posted by Larry Hoover on December 25, 2015, at 15:20:48
> Vitamin D3 supplementation should be adjusted on the basis of body weight.
>
> http://www.ncbi.nlm.nih.gov/pubmed/22262154
>
> Not shown in this abstract, but one of the authors (Dr. Heaney) said the formula to obtain 25(OH)D levels of >40 ng/ml is 70-80IU/kg/day. (35IU/pound/day). So, a 200 lb. person should take 7000IU/day, as a simple example.
>
> LarThanks.
I've been taking only 5000 IU per day. I think I'll raise the dosage. I would need to take 7000 IU/day or 50,000 IU per week. Is it possible to take 50,000 IU as a single dose on a weekly basis? Would there be any negative consequences to taking 10,000 IU/day.
Thanks again.
- Scott
Posted by Larry Hoover on December 26, 2015, at 13:14:08
In reply to Re: What is a good vitamin D3 maintenance dosage? » Larry Hoover, posted by SLS on December 25, 2015, at 16:49:39
> > Vitamin D3 supplementation should be adjusted on the basis of body weight.
> >
> > http://www.ncbi.nlm.nih.gov/pubmed/22262154
> >
> > Not shown in this abstract, but one of the authors (Dr. Heaney) said the formula to obtain 25(OH)D levels of >40 ng/ml is 70-80IU/kg/day. (35IU/pound/day). So, a 200 lb. person should take 7000IU/day, as a simple example.
> >
> > Lar
>
> Thanks.
>
> I've been taking only 5000 IU per day. I think I'll raise the dosage. I would need to take 7000 IU/day or 50,000 IU per week. Is it possible to take 50,000 IU as a single dose on a weekly basis? Would there be any negative consequences to taking 10,000 IU/day.
>
> Thanks again.
>
>
> - ScottI've been expanding my research parameters on the subject, and it's really quite fascinating. For example, the Institute of Medicine's daily recommendation of 800 IU/day is the result of a math error (proven by another team reviewing the same database). It was a decimal error, suggesting the recommended daily intake (all sources, not just supplements) should be >8000 IU.
Anyway, on to your questions. Individual response to D3 supplements is quite variable, so the equation provided above should be seen as first pass guidance. The only way to know if you're achieving the desired target of 40 ng/ml 25(OH)D is having your blood tested. Given that you have been taking a stable dose for a period of time, maybe a blood test would be a good place to start?
Yes, you can take your D3 supps in bolus (single high dose) form, but for people like me, I do better with a daily routine. I'd forget when I did it, and when the next dose should be.
No, there would not be any expected consequences of taking 10,000 IU/day. You'd still be far below the potential for adverse events. And, for the record, the most obvious adverse events arising from hypervitaminosis D3 (D3 excess) are not caused by D3 at all. As you increase your intake of D3, you increase your need for vitamin K2. Ultimately, D3 excess causes K2 deficiency, and those deficiency symptoms have traditionally been blamed on the D3 excess.
I'll see if I can find a proportionality chart for D3 and K2.
Lar
Posted by Larry Hoover on December 26, 2015, at 13:22:27
In reply to Re: What is a good vitamin D3 maintenance dosage? » SLS, posted by Larry Hoover on December 26, 2015, at 13:14:08
> > > Vitamin D3 supplementation should be adjusted on the basis of body weight.
> > >
> > > http://www.ncbi.nlm.nih.gov/pubmed/22262154
> > >
> > > Not shown in this abstract, but one of the authors (Dr. Heaney) said the formula to obtain 25(OH)D levels of >40 ng/ml is 70-80IU/kg/day. (35IU/pound/day). So, a 200 lb. person should take 7000IU/day, as a simple example.
> > >
> > > Lar
> >
> > Thanks.
> >
> > I've been taking only 5000 IU per day. I think I'll raise the dosage. I would need to take 7000 IU/day or 50,000 IU per week. Is it possible to take 50,000 IU as a single dose on a weekly basis? Would there be any negative consequences to taking 10,000 IU/day.
> >
> > Thanks again.
> >
> >
> > - Scott
>
> I've been expanding my research parameters on the subject, and it's really quite fascinating. For example, the Institute of Medicine's daily recommendation of 800 IU/day is the result of a math error (proven by another team reviewing the same database). It was a decimal error, suggesting the recommended daily intake (all sources, not just supplements) should be >8000 IU.
>
> Anyway, on to your questions. Individual response to D3 supplements is quite variable, so the equation provided above should be seen as first pass guidance. The only way to know if you're achieving the desired target of 40 ng/ml 25(OH)D is having your blood tested. Given that you have been taking a stable dose for a period of time, maybe a blood test would be a good place to start?
>
> Yes, you can take your D3 supps in bolus (single high dose) form, but for people like me, I do better with a daily routine. I'd forget when I did it, and when the next dose should be.
>
> No, there would not be any expected consequences of taking 10,000 IU/day. You'd still be far below the potential for adverse events. And, for the record, the most obvious adverse events arising from hypervitaminosis D3 (D3 excess) are not caused by D3 at all. As you increase your intake of D3, you increase your need for vitamin K2. Ultimately, D3 excess causes K2 deficiency, and those deficiency symptoms have traditionally been blamed on the D3 excess.
>
> I'll see if I can find a proportionality chart for D3 and K2.
>
> Lar
I found the answer right away. 100 mcg K2 for every 5,000-10,000 IU D3. This was in an excellent little article, which I recommend that you read.https://riordanclinic.org/2013/10/vitamins-d3-and-k2-the-dynamic-duo/
I'll keep looking to see if that ratio is also supported elsewhere.
Lar
Posted by Lamdage22 on December 29, 2015, at 12:26:15
In reply to Re: What is a good vitamin D3 maintenance dosage?, posted by Larry Hoover on December 25, 2015, at 15:20:48
Seems high...
Posted by Larry Hoover on December 29, 2015, at 21:52:39
In reply to Re: What is a good vitamin D3 maintenance dosage?, posted by Lamdage22 on December 29, 2015, at 12:26:15
> Seems high...
Compared to what? You're already taking 5,000 IU/day, right?
The body mass/dose realtionship was developed to explain the fact that obese people with high D3 intakes are still often deficient.
Do you want the reference?
Lar
Posted by Lamdage22 on January 12, 2016, at 11:11:44
In reply to Re: What is a good vitamin D3 maintenance dosage? » Lamdage22, posted by Larry Hoover on December 29, 2015, at 21:52:39
4000 right now.
Maybe will reduce to 3500mg and then get a blood test.
This is the end of the thread.
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