Dihydroquercetin, taxifolin for COVID-19

Dihydroquercetin, taxifolin may be beneficial for COVID-19 according to the studies below. COVID-19 involves the interplay of 500+ viral and host proteins and factors providing many therapeutic targets. Scientists have proposed 11,000+ potential treatments. c19early.org analyzes 210+ treatments. We have not reviewed dihydroquercetin, taxifolin in detail.
Ananto et al., Unlocking the Potential of Papuan Red Fruit (<i>Pandanus conoideus</i> Lamk): A Comprehensive Exploration of Its Role in COVID-19 Inhibition Through Molecular Docking and Molecular Dynamics Simulation, Indonesian Journal of Chemistry, doi:10.22146/ijc.99486
Indonesia's rich flora has long been used in traditional herbal medicine, and scientific research is now confirming the health benefits of these plants. Among them, Papuan Red Fruit is gaining attention for its potential in treating various ailments, including COVID-19, due to its antioxidant and antibacterial properties. This study focuses on using in silico methods to investigate how Papuan Red Fruit might inhibit COVID-19, specifically by targeting the papain-like protease (PLpro), a key protein in viral replication. Molecular docking and molecular dynamics (MD) simulations were used to assess the binding affinity and stability of compounds from the fruit. The compound quercetin 3'-glucoside showed the lowest binding energy, indicating strong interactions with PLpro. MD simulations at 300 K for 100 ns confirmed the stability of the quercetin 3'-glucoside-PLpro complex, revealing hydrogen bonds with residues like GLN169. The simulations showed an average delta RMSD of 0.2702 Å, indicating the complex's stability. Overall, this research highlights the potential of Papuan Red Fruit as a natural treatment for COVID-19, opening the door for further studies in drug development.
Chatatikun et al., Potential of traditional medicines in alleviating COVID-19 symptoms, Frontiers in Pharmacology, doi:10.3389/fphar.2024.1452616
This review discusses the prevention and treatment of coronavirus disease 2019 (COVID-19) caused by infection with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Mutations in its spike glycoprotein have driven the emergence of variants with high transmissibility and immune escape capabilities. Some antiviral drugs are ineffective against the BA.2 subvariant at the authorized dose. Recently, 150 natural metabolites have been identified as potential candidates for development of new anti-COVID-19 drugs with higher efficacy and lower toxicity than those of existing therapeutic agents. Botanical drug-derived bioactive molecules have shown promise in dampening the COVID-19 cytokine storm and thus preventing pulmonary fibrosis, as they exert a strong binding affinity for viral proteins and inhibit their activity. The Health Ministry of Thailand has approved Andrographis paniculata (Jap. Senshinren) extracts to treat COVID-19. In China, over 85% of patients infected with SARS-CoV-2 receive treatments based on traditional Chinese medicine. A comprehensive map of the stages and pathogenetic mechanisms related to the disease and effective natural products to treat and prevent COVID-19 are presented. Approximately 10% of patients with COVID-19 are affected by long COVID, and COVID-19 infection impairs mitochondrial DNA. As the number of agents to treat COVID-19 is limited, adjuvant botanical drug treatments including vitamin C and E supplementation may reduce COVID-19 symptoms and inhibit progression to long COVID.