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Despite taking 10,000 units a day, I have come down with a cold, probably due to stress. I have Bio-Tech 50K IU capsules. In the past, I took just one at the first sign of a cold and that stopped me getting the cold. But this time, the cold is getting worse. I am thinking of taking 2 capsules and would like your opinion on this . By the way, I also take vitamin K2, zinc. boron, magnesium on a daily basis.

Asked by  bprichard@somaxsports.com on November 4, 2014

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