Zinc and vitamins C and D are integral parts of the immune system and show synergistic functions at various stages of the host defenses, such as the maintenance of the integrity of biological barriers and the functionality of cells that make up the innate and adaptive systems and thus boost the overall immunity of the body and help in protecting from infections such as the COVID-19.

Zinc Clinical Evidences: The Usefulness of Zinc as an Adjuvant Therapy in COVID-19

Sources:

1. Name JJ, Souza ACR, Vasconcelos AR, et al. Zinc, vitamin D and vitamin C: perspectives for COVID-19 with a focus on physical tissue barrier integrity. Front Nutr. 2020;7:606398.
2. Finzi E. Treatment of SARS-CoV-2 with high dose oral zinc salts: a report on four patients. Int J Infect Dis. 2020;99:307-9.