ABSTRACT
Currently, the novel and major life-threatening cause all over the world is COVID-19 (Coronavirus disease 2019) which is started at the end of 2019 in Wuhan, China, and spread all over the world today. The infection of COVID-19 severity is variable which affects all ages' people and especially elderly persons whose immune system is very weak. Fatigue, fever, respiratory illness, dry cough, loss of appetite, olfactory dysfunction are the most common symptoms of this disease along with the decrease of certain cells of the immune system like helper T cells, monocytes/macrophages, etc. and an increase in pro-inflammatory cytokines are some of the major characteristics of this disease. Some natural herbal products are a successive option to combat SARS-Cov-2 disease. Herbs have various potential compound which is used as a dietary product that strongly influences immunity and maintenance of the homeostasis of inflammatory/anti-inflammatory. In the present review, we describe the potential of three herbal products as Turmeric (Haldi), Heart-leaved moonseed (Giloy), and Black cumin (Kalonji) that can be used for preventative or nutritional therapy of COVID-19.