COVID appears to be treated by many antioxidants ( Vitamins D, C, E, K, and Quercetin, Curcumin, etc) – Jan 2023 | VitaminDWiki
Vitamin D, Quercetin, and Estradiol all increase vitamin D in cells and increase genes which reduce COVID-19 – May 21, 2020 | VitaminDWiki
Quercetin-3-O-rutinoside from Moringa oleifera Downregulates Adipogenesis and Lipid Accumulation and Improves Glucose Uptake by Activation of AMPK/Glut-4 in 3T3-L1 Cells | SpringerLink
APExBIO - Orientin
quercetin - Wiktionary
Rutin 153-18-4 wiki
Quality control and standardization of Quercetin in herbal medicines by spectroscopic and chromatographic techniques | Future Journal of Pharmaceutical Sciences | Full Text