Table 1.

Action mechanism of Ayurvedic metal nanoparticles on SARS-CoV-2

Ayurvedic preparations	Metal nanoparticles	Possible targets	Reference
Swarna Bhasma	Gold nanoparticles	Binding with S protein Bind with the envelop glycoprotein	Sekimukhi et al. 2020 Di Gianvincenzo et al. 2010
Rajata Bhasma	Silver nanoparticles	Interacting with virus genome	Kerry et al. 2019
Tamra Bhasma	Copper nanoparticles	CYS 145 thiolate in the coronavirus main protease active-site	Garza-López et al. 2020
Lauha Bhasma	Iron nanoparticles	S protein receptor-binding domain	Abo-zeid et. al. 2020
Yashada Bhasma	Zinc nanoparticles	RNA-dependent RNA polymerase	Barnard et al. 2011