Table 3.  Patent protected herbs for preventing/treating COVID-19.
Name of the player  Drug name and details  Ref.
Biostandard Inc  Fermented Isatidis Radix Extract  [82]
Bioniche Life Sciences Inc  Pyranocoumarin enriched composition (free from furanocoumarins) obtained from Zanthoxylum americanum (Prickly Ash)  [83]
The University of Hong Kong  Baicalin – compound extracted from Scutellaria baicalensis  [84]
Seoul National University Industry-Academic Cooperation Foundation  Extract of Angelica dahurica  [85]
Amazon Biotech Inc.  Herbal composition comprising ‘Boswellia carterii stem resin, Styrax benzoin stem resin, Cinnamomum zeylanicum bark, Curcuma zedoaria root, Syzygium aromaticum fruit, Nardostachys chinensis root, Betula alba bark, Impatiens balsamina bark, Costus spicatus root, Allium sativum bulb Cyperus rotundus root and Hyssopus officinalis’  [86]
Biopharmacopae Inc.  Extracts of ginger and/or goldenrod (Solidago)  [87]