I also take 10,000 IU D3 daily myself, the results have been a MIRACLE !
I used to suffer TERRIBLE chest colds every winter & spring for DECADES! I suffered for many weeks each time, hardly able to breath. It was so bad that I was afraid to go outside the house for fear someone would cough on me.
That was 8 years ago, and I have not had a chest cold (or Flu) since. Just a few sniffles at the most. Then I discovered Iodine that cured my prostate and my Asthma.
See our Testimonials for Iodine here: http://tinyurl.com/Iodine-Candida
The combination of D3 and Iodine supplements are ROCKET FUEL for the immune system.