TABLE 3.

In vivo antiviral activity of various herbal extracts against coronavirus infection.

No.	Herbs	Extract/Compound	Coronavirus type	Animal model	Concentration	Observation, survivability and/or biopsy	References
1.	Allium sativum L.	Water extract	IBV	Chicken embryo	0.1 ml of extract	Less dwarfism observed in chicken embryos treated with garlic	Mohajer Shojai et al. (2016)
2.	Epimedium koreanum Nakai	Water extract	PEDV	Pig	0.6% of extract	No disease symptoms such as diarrhoea	Cho et al. (2012)
						Biopsy results showed clean intestine
3.	Houttuynia cordata Thunb.	Water extract	IBV	Chicken embryo	62.5 mg/ml	Fully protected the chicken embryos and more than 50% protection rate in chickens	Yin et al. (2011)