Hey ,as i know taking natural herbs like Vitamin C, Vitamin A, Zinc, Echinacea and so on, is good for relieving cols and flu in an effective and natural way.
Echinacea is a traditional protective agent for the support of the immune system and is therefore implicated in the treatment of Colds and Flu. Vitamin C, a water soluble antioxidant, plays an important role in maintaining proper immune function. Bioflavonoid Mix helps the body absorb and utilize Vitamin C. Vitamin A is fat soluble and has antioxidant properties that may boost immunity which is vital in the treatment of Colds and Flu. Zinc is an essential mineral that is a component of the enzymes needed to boost immunity, and protect against free radicals.
I got this info. from one of the famous nutritional consultant whose name is Dr. James F. Balch. He is also a physician, a surgeon, and a leading authority on integrative medicine and nutritional healing. Dr Balch has written several books and co-authored two best-selling books that address a broad range of health concerns and their nutritional prescriptions.
Try googling custom made supplements and vitamins for Colds and Flu, and find a personalized health solution for yourself.