Vitamin D, vitamin C and zinc are the three micronutrients that can be effective and safe to take in high dosages to strengthen your immune system against SARS-CoV-2 etc. Other vitamins and minerals also contribute to a strong immune system. Therefore, I also recommend a good multivitamin supplement as a solid foundation and to fill out any gaps. Research indicates that especially the trace mineral selenium can be important in order to avoid serious illness from Covid-19. Vitamin A also plays a fundamental role for the immune system, but both vitamin A and selenium are nutrients that can result in … Læs resten af Natural Corona Vaccine No. 4: Take a Good Multivitamin Supplement