Garlic in your diet will help build a natural resistance to colds
Also include the following in your diet-spinach, carrots, grapefruit, oranges, horseradish, onions, chives, cabbage, brussels sprouts and tomatoes
At the onset of a cold, add 1/2 teaspoon each of cinnamon and ginger to 1 cup of scalded milk. Add 1 tablespoon of honey and drink while hot. This remedy is very soothing and stimulating.
Add 1 drop of tea tree or eucalyptus oil to a glass of warm water & gargle
Cold tea - combine equal parts of elder, peppermint, and yarrow and steep 1 to 2 tsp of the mixture in 1 cup hot water. Take it hot just before going to bed.