These products contain iron, vitamin A, B12, B6, C, D or zinc, all of which may contribute to normal function of the immune system.*
* Reider CA, Chung R-Y, Devarshi PP, Grant RW, Hazels Mitmesser S. Inadequacy of Immune Health Nutrients: Intakes in US Adults, the 2005–2016 NHANES. Nutrients. 2020; 12(6):1735.