Which supplements are of most interest in immunity and infectious disease?

Micronutrient supplementation, specifically vitamin-a, vitamin-e, vitamin-d, folate, and zinc, particularly in the case of specific deficiency, is known to enhance immune infection and reduce susceptibility to different infections. Several herbs, such as garlic, ginger, turmeric, korean red ginseng, licorice, and ashwagandha have shown antiviral and other antimicrobial properties in preclinical studies. Very few have been systematically studied in human clinical studies.^[1] In addition, duration, severity and susceptibility to the common-cold are all reduced by garlic supplementation.