General Question

gailcalled's avatar

If you take a daily vitamin D3 tab, what's your dosage?

Asked by gailcalled (54644points) July 24th, 2010

New guidelines and new research range from 1000 -2000 IU daily to 5000 IU (which is what my dermatologist takes).

Apparently, the epidemiology studies now say that high dosages, while good for many things, can increase one’s risk for pancreatic cancer.

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17 Answers

AdvanceSubsonic's avatar

It looks like between 4,000–10,000 IU/day from all sources.

lucillelucillelucille's avatar

I take 2000 IU 3x per day.

gailcalled's avatar

^^Did you both get Dr.‘s opinion or decide on your own and according to current research?

@AdvanceSubsonic: Are your sources reputable? Can you give me some links? The Mayo Clinic is sticking to the low end, according to this.

lucillelucillelucille's avatar

@gailcalled-I told my doctor what supplements I take and the amounts,She agreed with my regimen :)

gailcalled's avatar

@lucillelucillelucille: Is the daily total 2000IU or 6000IU? Do you get blood work done to check on the amount that your body is using?

lucillelucillelucille's avatar

@gailcalled -Total amount is 6000 IU per day.My doctor has not prescribed blood work for that reason.I take alot of daily supplements and my diet is healthy.

Aster's avatar

No doctor. 4K IU daily.

faye's avatar

I’m taking 4000 units per day. I just went to an osteoporosis clinic and the doctor agreed I should stay on this. I am outside so much in the sun but I didn’t think to ask her about that.

LuckyGuy's avatar

I take 1000 I U per day. I also go outside,.and eat right so even that might not be necessary.

JLeslie's avatar

I take a prescription of 50,000 IU once a weeek (I think the script is actually D2, I can check later) and 800 IU daily of D3 over the counter. I can barely keep my D in normal ranges. I take my prescription without fail, I do admit that I probably miss a day or two a week on my daily vitamins.

I recommend you get a blood test to see where your D is. My husband’s is well within normal ranges and he only takes a daily vitamin that has 400 IU I believe, and he has darker skin than me; although, I do protect my skin more than him.

I don’t believe anyone cann get enough D just from food.

Mind you the normal ranges were increased several years ago from what I understand, some people who are below normal now, were probably normal before. There were studies that showed possible causation between vitamin D and parathyroid dysfunction, and as we all know D helps calcium into the bone along with vitamin K.

Now, a very serious risk, is elevated calcium levels in the blood when taking too much D, very dangerous. Tissues begin to stiffen and calcify. If you are taking large doses of D you should be getting your calcium levels checked. A relative of mine was on Calcitrol (I think that is D3 with calcium thrown in) for osteopenia and her calcium became too high and she had to reduce her dose. I have mine checked every 3 months more or less.

jazmina88's avatar

I just got bloodwork done and I dont have much B or D. I was told that 2000 units should take care of me.

JLeslie's avatar

@jazmina88 Which B, B12? Or, did they run a whole B panel?

Garebo's avatar

I find the Mayo Clinic to be suspect in analysis due to influence of powerful associations that may influence them providing independent research that would be counter to these associations-always seem to discourage or dismiss studies due to lack of research or reliability. What I don’t understand then, is why they rarely perform the necessary studies, especially, when there is significant evidence a supplement, mineral or herb helps a lot of people. I will never know, but I believe it may have something to do with money. From the Mayo and others the best I ever see is a 2 on occasion a 3, but it usually is for an ailment that occurs .001% in the US population.
Vitamin D, I personally keep it at 900 iu since I am outside enough to provide me with an adequate supply and I take more on cloudy days,
My few mega doses in supplements is primarily in bioavailable vitamin C I find it too be most efficacious, and then the quality B’s and magnesium.
I should probably up my dosage of D after reading this. Something I will need to research more.

flitter54's avatar

I become D deficient easily and once year and put on 50,000 daily for 1 month. My Doc has me on 2,000 iu daily the rest of the time. As you get older, suppliments become more important.

JLeslie's avatar

I wanted to state again that I don’t think it is prudent to just guess with fat soluble vitamins (ADEK), get the blood test before you start megadosing. And, for that matter, I know the water solubles are always said that you cannot overdose, but it seems it does take the body some time to filter the vitamins out of the body. There are studies showing large doses of folic acid can have mal effects, and my neighbor was taking shots of B12 on her own, and when her doc checked her during her check-up her numbers were super high, outside of normal.

faye's avatar

I take vit K as well and the osteo doctor pooh-poohed that. I’m still going to take it.

JLeslie's avatar

@faye Yeah, K is very interesting to me. Seems other countries watch K more then cholesterol, I think it is K2, which the Japanese eat a lot of, and have a low incidence of Heart disease. It is found in egg yolks, which of course I avoid because of my cholesterol. I asked a question about it a while ago. It is supposed to help move the calcium into the bone, just as important as D, and keeps the arteries clean of calcium deposits which can occlude the artieries I guess.

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