Maintains a healthy respiratory tract Helps the body produce lymphocytes and macrophages that protect the body from microbes, pollutants and allergens Animal studies demonstrated a reduction of mortality and viral activity in herpes simplex virus encephalitis and influenza A virus pneumonia. In vitro studies revealed antiviral activity against HIV-1, SARS related coronavirus, respiratory syncytial virus, arboviruses, vaccinia virus and vesicular stomatitis virus(1) Yashtimadhu (Glycyrrhiza glabra) was found potent to reduce morbidity rate and easily available with highest immunomodulator properties.