Taken together, data from a number of clinical studies demonstrate that the separate administration of vitamin C or zinc results in a reduction of the duration and severity of common-cold symptoms in healthy individuals.
A new review of 82 existing studies on vitamins C and D, zinc, and echinacea (Echinacea purpurea) adds further support to those nutrients' ability to help maintain immune health and reduce the severity and duration of cold symptoms.
Vitamin C, also known as ascorbic acid, is necessary for the growth, development and repair of all body tissues. It's involved in many body functions, including formation of collagen, absorption of iron, the immune system, wound healing, and the maintenance of cartilage, bones, and teeth.
Zinc is needed for the proper growth and maintenance of the human body. It is found in several systems and biological reactions, and it is needed for immune function, wound healing, blood clotting, thyroid function, and much more. Not a Drug