Quote:
Originally Posted by liverock
Nobody should take high doses of vitamin D without testing serum levels,especially if they are taking ongoing dosages. Guessing your vit D levels doesn't work as we all assimmilate at different levels due to genetic variations.
Grassrootshealth have a cheap pinprick test you can do at home and you get the result back in 2/3 weeks. I have no FI in this company.
https://www.grassrootshealth.net/
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While I agree that a 25(OH)D test is a good idea and the Grassrootshealth D Action link provided is the cheapest source such is the safety of vitamin D3 that it is reasonable to suggest people take an EFFECTIVE amount such as 5000iu/daily for around 3 months to see how they respond to that level before having a test.
The purpose of the test at this point is to see if 5000iu/D is sufficient to achieve a reasonable level.
We know that up to
10,000iu/daily is absolutely safe even in the presence of ample sunshine. We also know that given full body sun exposure human skin will create between 10,000~20,000iu of a bioidentical form of Vitamin D3.
It is therefore without doubt totally risk free to take 5000iu/daily BEFORE getting a 25(OH)D TEST.
When you get your test result you will then be better able to judge how much extra you will require if you level is still below 55ng/ml. 1000iu/daily is usually required to raise status 10ng/ml 25nmol/l though those with inflammatory conditions may require 2000iu/d to achieve the same improvement.
My point is that average UK status this time of year is probably around 20ng/ml 50nmol/l and dropping (end October) so it is safer to supplement at an effective rate ASP. In 3 months time, end of Jan ~ Feb the 25(OH)D test will show if 5000iu/d is sufficient.
If you wait for a test before supplementing that will not help you know how you respond to D3. It will only tell you that you are deficient and common sense should tell you that without wasting money on a test.
You know if you've been taking an effective amount of supplement or not for the last 3mths or not or have been using a sunbed. If you haven't then supplement first for 3mths then test.
50,000iu weekly D3 is equivalent to 7100iu/daily and is a reasonable way of attaining and maintaining status.
I don't really understand why Holick is pushing the D2 option.
$168 for 100 x 50,000iu DRISDOL or $30 for the safer, more reliable, more effective BIOTECH PHARMACAL D3 X 50,000IU.
What kind of ethically challenged moron recommends the more expensive less effective less reliable form?
Follow the money.
I presume someone is looking for funds for research funding and this is the quid pro quo.