Hello Quinta_Essentia

Thought I'd give Tony a hand on this one.

This is the prevailing view of Vitamin D intake by the Vitamin D Council............

"If you totally avoid the sun, recent research indicates you need about 4,000 units of vitamin D a day. Which means you can't get enough vitamin D from milk (unless you drink 40 glasses a day) or from a multivitamin (unless you take about 10 tablets a day), neither of which is recommended.
Most of us make about 20,000 units of vitamin D after about 20 minutes of full body exposure to the summer sun.

This is about 100 times more vitamin D than the government says you need every day.

The only way to be sure you have adequate levels of vitamin D in your blood is to regularly go into the sun, use a sun bed (avoiding sunburn), or have your physician administer a 25‑hydroxyvitamin D test. Optimal levels are around 50 ng/mL (125 nM/L).
If you don't get vitamin D the way Mother Nature intended, from sunshine, you need to take supplemental vitamin D3 cholecalciferol. Since most of us get a lot more vitamin D from sunshine than we realize, most of us need about 2,000 units a day extra."

http://www.vitamindcouncil.org/


Just make sure that the Vitamin D you supp-le-ment with is Vitamin D3 or "cholecalciferol", which is much more bio-available for mammals.

Regards

Chrisb1.

For about 2 years I have been taking 6,000 I.U./day of Vitamin D3 during daylight savings while going to 10,000 I.U./ day during standard time. At times when everyone is getting the flu I have taken as much as 24,000 I.U. /day for a maximum of 4 days.
I have read that toxicity with Vitamin D does not begin until until someone is getting around 40,000 + I.U. /day for a number of months. I also understand that any toxicity is reversible with cessation of Vitamin D intake.
I have not personally experienced any toxicity to date.

John

However much vitamin D you take, you MUST take 10% in Vitamin K2 ( MK7 Menaquinone), i.e. 1000iu Vit D with 100iu Vit K2. they are synegistic plus K2 helps your body absorb Vit D.
I was in a clinic recently where I saw a box of Vit D on the desk, it was clearly marked 25,000iu. When I asked the consultant he replied 'We use those for patients who have serious heart problems'. I have been taking 5000iu of Vit D for 12 months now without any problems , I am 71 yo.
The Institute of Medicine (IOM) in the UK reccomend 4000iu daily of Vitamin D. But do not forget, Vitamin K2 (MK7 Menaquinone) is essential.