We do not give medical information nor personal recommendation of any product, treatment or point of view on these pages. We simply collate information that may be of interest Quercetin — An Alternative to Hydroxychloroquine, and More Quercetin and Vitamin C: Synergistic Therapy for COVID-19 Two New Studies Show Quercetin Improves Covid Outcome COVID-19 treatment studies for Quercetin Quercetin and Vitamin C: An Experimental, Synergistic Therapy for the Prevention and Treatment of SARS-CoV-2 Related Disease(COVID-19) What is the role of supplementation with ascorbic acid, zinc, vitamin D, or N-acetylcysteine for prevention or treatment of COVID-19 Vitamin C as prophylaxis and adjunctive medical treatment for COVID-19? Dr Zelenko explains how Z-Stack (Zinc, Quercetin, Vitamin C & Vitamin D) works in the body to prevent serious illness in covid infections (~ 7.40mins) and other things