Quote:
Originally Posted by senior citizen
http://en.wikipedia.org/wiki/Cholecalciferol
???? Last paragraph re "toxicity" ????A bit troubling to see that it’s used for rodent poison. See above hyperlink.
My Nature’s Way Womans 50+ ALIVE Vitamins/Vitamin D3 from Sheep Lanolin 1,600 units per day (2 gummy's)……
Any scientists/chemists out there with an opinion re taking this form of D3?
I actually think my joints feel stiffer since taking these vitamins……
I thought it might be healthier as it has 26 fruits and vegetables supplying the other vitamins, however, the fact that the D3 is obtained from "lanolin" has been bothering me all along, and truthfully I probably get enough D from eggs, fish, etc……now that our sunshine has returned……..from a natural source as well.
I did take them all winter long due to our total lack of sunshine.....but now am rethinking it.When I contacted Nature’s Way in the beginning, they were upfront about where their D3 came from.Sheep’s lanolin.
I'm wondering if this can build up in one's system????
Thanks in advance.........
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Your link, under "industrial production", tells how D3 is produced from sheep's wool. That must be the standard way of producing it. When I called the company that makes my liquid form of D3 they told me it was produced from sheep's wool. I suppose it doesn't matter where it comes from as long as it is chemically the same as what we would produce by exposing ourselves to sunlight. D3 is D3 regardless where it comes from.
Toxicity: I have two vitamin books by different authors and they make recommendations based on age, just as your link does under "dose". For those under 70 it's 600 IU per day and for those over 70 it is 800 IU per day.
My personal opinion is: Going over the recommended dosage could be toxic to certain individuals, depending on their health status. It might build up to a toxic level if the person has a slow metabolism.
After getting my blood tested for D3 (I had to ask for it.) my doctor recommended a large dose. Long story short, I couldn't tolerate a large dose. The symptom I got was pressure building up in my head. I decided to trust the recommendations from my 2 vitamin books. But when I went shopping for 800 IU of D3 I found that it doesn't exist. So I ended up buying it in liquid form. The bottle comes with an eye dropper and each drop provides 200 IU.
My last blood test indicated I was low so I have now increased the number of drops to 5. That's 1,000 IU and I will be retested later this year. The funny thing is I once tried a 1,000 IU tablet and could not tolerate it. After several days it seemed to build up in my system, but the liquid form is not doing that.