Do you recommend large doses of Vitamin D3 to help avert colds?
Two years ago I had ahead cold in the months of November, December, January, March and April. In each of the 5 cases it took two weeks to run its course. Last year, after upping my Vitamin D3 intake to 10000 IU's per day I did not have a single cold. This year, November, 2012, I am in the midst of my first cold after reducing my Vitamin D3 to just 500 IU's per day. Should I up my intake to 10000IU's once again?