I guess that cold remedies are important whether you're flying or not. Zinc is very good for helping to relieve the symptoms both as they first appear and later into a cold, but make sure you take it after food, otherwise you'll feel very sick.
Everyone is different, so if vitamin supplements work for you, don't be put off by what others say. I take Vit C with Zinc on a daily basis and have done for years. I've had no ill effects and I now hardly ever get a cold, whereas prior to taking them I was always coming down with one. However, this might not work for everyone.
I know you've all been told this over and over again, but when you're flying take on loads of fluid such as water and non fizzy fruit drinks. This, as well as a diet rich in fruit and veg, will help fight off a cold in the first place.
The demon drink............I know I'm talking to cabin crew here, many of whom, like a drink or two.........will make you more likely to succumb to colds.
But you knew all that latter bit didn't you.
