Lactoferrin is a natural protein found in cow milk and human milk and it helps protect infants against infections. It has been studied in depth and clinically used for treating stomach ulcers, diarrhea, and used against bacterial and viral infections. Other uses include stimulating the immune system, regulate bone marrow function, and preventing cancer.
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Lactoferrin for prevention of common viral infections. Wakabayashi H, Oda H, Yamauchi K, Abe F. J Infect Chemother. 2014 Nov;20(11):666-71.
Immunomodulatory effects of lactoferrin. Siqueiros-Cendón T,et al. Acta Pharmacol Sin. 2014 May;35(5):557-66.
Lactoferrin: Antimicrobial activity and therapeutic potential. Embleton ND, et al. Semin Fetal Neonatal Med. 2013 Mar 15.
Lactoferrin as potential preventative and adjunct treatment for COVID-19 Chang, R et al. Int J Antimicrob Agents. 2020 Jul 30 : 106118.