0_Apprentice
I hate it when I get a cold!  As soon as I get the sniffles I take Vitamin C to fight it.
1_Wizard
That's a good idea. There is some evidence that regular use may shorten how long a cold lasts.
0_Apprentice
I just take whatever amount is in a vitamin.  How much should you take?
1_Wizard
You might want to read that bottle. I'm not exactly sure of the correct dosage, but too much may cause stomach discomfort, headaches, trouble sleeping and skin flushing.
0_Apprentice
What else can I take to prevent the common cold?
1_Wizard
Best evidence currently out there shows the best prevention to be handwashing.