Vitamin C is not sufficient to overcome a cold. The patient should strengthen the system as a whole by taking a diet which supplies all the vitamins and minerals the body needs. Vitamin C, however, heads the list of these nutrients. It protects one against infection and acts as a harmless antibiotics. It is found in citrus fruits, green leafy vegetables, sprouted Bengal and green grins. According to Dr. Linus Pauling, a Nobel prize-winning scientist, the regular use of this vitamin in the optimum daily amount will prevent the common cold and if a cold has already appeared, large doses of this vitamin will relieve the symptoms and shorten its duration. He estimates that one to two grams or 100 mg. to 200 mg. per day is approximately the optimum amount of this vitamin. His advice is to swallow one or two 500 mg. tablets of vitamin C at the appearance of first sign of the cold and continue the treatment by taking an additional tablet every hour. Lime is the most important among the many home remedies for common cold. It is highly beneficial in all types of cold and fevers. It should be taken well diluted. Vitamin C-rich lime juice increases resistance, decreases toxicity and reduces the duration of the illness. Lime juice should be diluted in a glass of warm water, and a teaspoonful of honey should be added to it. It forms an ideal remedy for a cold and dry cough.