Vitamin D deficiency

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long-term use of more than 4000 IU/ day (D is a fat-soluble vitamin, so it gets stored and builds up) can cause vomiting, hallucinations, abnormal heart rhythms, high calcium levels, increased thirst, and even lead to coma and death.

"I have low-D (as opposed to the more recognized low-T, but I digress).

Weekly doses of 50,000 IU of Vitamin-D were common several years ago (and still are for acute care), but research showed that such a dosage, especially at one time, does more harm than good. The current recommended course is a daily dose of 5,000 IU for a total weekly dose of 35,000 IU.

So, while a single dose of 50,000 IU is sometimes needed, it shouldn't be sustained beyond a multi-dose of 35,000 IU.

And, yes, when one's Vit-D levels are normal, it is pleasant."
This and Vitamin D3 is better than D2, which what the doctors give you. Luckily Vitamin D is dirt cheap. You can get a 6 1/2 month supply for about $7.

I was on the 50,000 units of Vitamin D once a week for nearly 18 months. A bone density test showed a calcium deficiency along with my low levels of vitamin D. I switched to 5,000 units daily along with 900 units of calcium when the prescription ran out.

My next blood test should be interesting.

Ask a dr. "Who" is knowledgable in this area.

My guess is most people have low D.
I do. My doc put me on a high dose slow release taken one time a week.

RX ran out and I now take a daily.

me... not that kind of Doc.

This is certainly some useful information.
A lot of people also have thyroid-issues which require iodine-supplements.
Lots of neuro-toxic substances are in the food/air/water-supplies so exercise due-diligence.

Vitamin D3 is better absorbed than D2. D2 still works but unless if you're vegan, there is no reason not to use D3.
If you don't suffer from malabsorption, you shouldn't take more than 100,000 IU every 2 months (usually every 3 months is largely enough, it's already a relatively high dose). If you suffer from malabsorption, the doctor might increase the dose to 100,000 IU / month but only in this case and it requires close monitoring with regular blood tests because it's already at the toxicity limit and it's what would happen if malabsorption syndrome improves. Such high doses are prescription only anyway (at least in my area).

I was told by my doctor that I was deficient and he told me to take 2000 I.U. per day. I guess I was only mildly deficient.

Vitamin D is fat soluble. I've noticed levels are really sensitive to weight fluctuations.

Rule of thumb: If you are overweight and you are not in the sun a lot, you are probably vitamin D deficient. If you are very skinny you should approach vitamin D with more care.

Also, scientists are having a chicken and egg problem with vitamin D. There seems to be some agreement that overweight causes vitamin D deficiency, but from personal experience I'd say it's a vicious circle.

Years ago, I was diagnosed with a vitamin D deficiency. Since then, I have been taking a daily vitamin D3. I am on the low end of normal weight, and I walk for 2 hours, once or twice a day. I still struggle with fatigue.

Recently, I was also diagnosed with Postural Orthostatic Tachycardia Syndrome. But the doctor did not prescribe any medications. So, I increased my water and salt intake, and wear prescribed compression stockings. ...And still struggle with fatigue.

Who knows what diagnosis will pop up next? Or if it will finally fix the problem?

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31st of July, 2013
Diagnosed: Autism Spectrum Disorder, Auditory-Verbal Processing Speed Disorder, and Visual-Motor Processing Speed Disorder.

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I take Vitamin D for MS. That and having a positive attitude has helped me have no symptoms in the last 15 years.