Dr Blaylock has said that if you get a cold or flu, you can knock it out by taking a 3 day ONLY super dose of D3.
It is 2,000 IU D3 per kg of body weight.
Ex. (So, if u weigh 100lbs, you divide 100 by 2.2 = 45, 45 x 2000 = 90,000 iu D3 once per day for 3 days ONLY)
I have done this with many including myself to get the D levels up faster and then, use a maintenance dose daily after that such as 3,000 iu per 100 lbs of body weight.