I found this, it might help....
While traditional medicines have been shown to relieve the symptoms of the common cold, there is significant evidence that several alternative treatments can actually prevent the onset or shorten the duration of common cold symptoms. Most alternative medicines appear to have no serious side effects, especially if regularly marketed products are used. Here are some treatments that have been found to be somewhat effective:
Zinc lozenges have been shown to reduce the duration of the common cold. Zinc deficiency has been linked to a variety of immune system abnormalities.
Echinacea is a daisy like purple wild flower found across the United States. It has been shown to stimulate white blood cell activity.
Garlic has also been shown to have prophylactic activity (see
prevention section)
While
antioxidants such as vitamin C have been used for treating and preventing colds, it is unlikely that taking large doses will have significant effects on the majority of the Western population, which is without vitamin deficiency.
Menthol and
Eucalyptus oils can provide relief from nasal congestion by causing a cool sensation in the nose. Local anaesthetic action also helps relieves sore throat and coughs. These oils also have antimicrobial activity that may help to inhibit infection of the upper respiratory tract.
I also read that keeping your feet warm helps... I thought that was strange: Keep your feet warm. Cold feet cannot cause a viral infection, but they can undermine your defenses thereby opening the door to them.
Don't forget Hot Chicken Soup.. it helps - drink plenty of fluids - Good Luck!