ECGC has been shown to suppress pathogenic viruses such as Epstein-Barr, herpes simplex, HIV-1 and the influenza virus. Green tea contains high levels of L-theanine which has been shown to activate human gamma-delta T lymphocytes to proliferate and make interferon gamma (If-G). If-G is a potent antimicrobial cytokine that is the first line of defense in the blood stream against infection.
ECGC has been shown to suppress viruses that cause diseases such as herpes simplex, Epstein-Barr HIV-1 infection and influenza viruses.