Here's a remedy I use for cold and coughs:
Warm lemonade knocks out colds and flu:
1 cup boiling water
Squeeze in the juice of 2 lemons
Honey to taste
2 dashes of cayenne pepper
Drink several times a day until your cold is gone or you have averted it.
Cayenne pepper will cut through the yuk in your throat and get rid of your cough. I also eat as many hot and spicy Doritos, with as hot a salsa as I can stand. This usually knocks out any sore throat or cough quickly.
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Immune Boosting Recipes