Vitamin C is a very potent antioxidant and plays an essential role in maintaining a strong immune system. Its structure can very easily donate electrons to stabilize other molecules in the body from damaging oxidants such as pollutants and chemicals, as well as help regenerate glutathione and vitamin E. Vitamin C is also found in high concentrations in our leukocytes, white blood cells that fight against infection. Intakes of at least 100mg/day can fully saturate these cells (aka build a strong immune system)!