Well, I take 10,000 IU D plus 1 Super K each day. At one time I doubled that and was able to increase my D significantly (over 70)...all for the good I might add. I read several books before taking that amount so I was comfortable with the amount and more than happy with the results. Helped my arthritis tremendously. One of the books: The Miraculous Results Of Extremely High Doses Of The Sunshine Hormone Vitamin D3 My Experiment With Huge Doses Of D3 From 25,000 To 50,000 To 100,000 Iu A Day Over A 1 Year Period by Jeff T Bowles

Well, I take 10,000 IU D plus 1 Super K each day. At one time I doubled that and was able to increase my D significantly (over 70)...all for the good I might add. I read several books before taking that amount so I was comfortable with the amount and more than happy with the results. Helped my arthritis tremendously.