Immunity Booster Supplements to Fight against Viral Infection with Prominence on COVID-19: An Review

Balanced diet which can help in maintaining or boosting immunity is essential for prevention and management of viral infections. While data regarding supplement in novel corona virus 2019 infection (COVID-19) are not available, in this review, we aimed to evaluated evidence from previous clinical trials that evaluated nutrition-based interventions for viral diseases (with special emphasis on respiratory infections), and tried to summaries our observations. Among vitamins, A, C and D showed a potential benefit, especially in deficient populations. Among minerals, selenium and zinc have also shown favourable immunity enhancing effects in viral respiratory infections. Several nutraceuticals, medicinal plants and probiotics may have some role in enhancing immune functions. In current review we summaries possible benefits of some vitamins, minerals, nutraceuticals, medicinal plants and probiotics. Nutrition principles based on these data could be useful in possible prevention and management of COVID-19.