Quercetin Emerging As One Of The Must Take COVID-19 Supplements Especially When Considering The Omicron Variant And Long COVID-19 Issues
COVID-19 Supplements: Since the mid of last year, numerous studies have emerged about the potential use of Quercetin supplements as an adjuvant in COVID-19 treatment protocols due to its anti-inflammatory and immunomodulatory properties in preventing cytokine storms. Furthermore, studies also showed that it had antiviral effects in terms of preventing the replication of the SARS-CoV-2 coronavirus.
https://www.thailandmedical.news/news/breaking-supplements-for-covid-19-quercetin-emerging-as-an-adjuvant-for-covid-19-treatments
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In fact, quercetin was one of the key compounds that was found in many of the initial Traditional Chinese Medicine (TCM) formulations that the Chinese Government and health authorities had incorporated in their treatment protocols to curb the COVID-19 disease.
https://www.thailandmedical.news/news/phytochemicals-quercetin,-puerarin-and-kaempferol-found-predominantly-in-traditional-chinese-medicine-tcm-can-inhibit-sars-cov-2-infection
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Quercetin was also found to be one of the key phytochemicals that could help prevent COVID-19 induced gastrointestinal inflammation and also diarrhea especially when dealing with the Delta variant and sub-variants.
https://www.thailandmedical.news/news/flavonoids-epigallocatechin,-baicalin,-hesperetin,-luteolin-and-quercetin-helps-prevent-covid-19-induced-gastrointestinal-inflammation-and-diarrhea
Its importance as one of the main
COVID-19 Supplements is even more elevated now with the emergence of the Omicron variant. Latest studies are showing that Omicron variant that has done a complete biological about-face of shifting from gaining entry via cell surface fusion following proteolysis by TMPRSS2 to entry via endosomal fusion after activation by the endosomal proteases Cathepsin B or L.
https://www.thailandmedical.news/news/breaking-omicron-has-shifted-to-using-cathepsins-for-cell-entry-via-endosomal-fusion,-impacting-cellular-tropism-and-pathogenesis
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Quercetin is one of the few phytochemicals that exhibit Cathepsin inhibition.
https://www.tandfonline.com/doi/abs/10.1080/14786419.2014.1002404
https://pubmed.ncbi.nlm.nih.gov/26044356/
https://www.tandfonline.com/doi/abs/10.1080/14786419.2014.1002404?journalCode=gnpl20
https://link.springer.com/article/10.1007/s11739-020-02383-3
https://www.frontiersin.org/articles/10.3389/fphar.2021.590509/full
https://www.sciencedirect.com/science/article/abs/pii/S0014299912005304
In terms of Long COVID-19, many studies have already shown that besides myocarditis, the various heart tissues and also heart functions are also damaged by the SARS-CoV-2 coronavirus.
https://www.thailandmedical.news/news/finally-an-american-study-that-confirms-what-we-have-been-saying-all-this-time-covid-19-is-contributing-to-excess-deaths-from-heart-issues
https://www.thailandmedical.news/news/german-and-danish-scientists-using-new-innovative-x-ray-imaging-shockingly-discover-that-sars-cov-2-causes-extensive-heart-vascular-damage
https://www.thailandmedical.news/news/european-society-of-cardiology-esc-warns-that-breathlessness-in-post-covid-individuals-reflects-heart-issues-that-warrants-urgent-medical-attention
https://www.thailandmedical.news/news/european-society-of-cardiology-warns-that-covid-19-affects-heart-in-many-ways--fatalities-and-excess-deaths-due-to-covid-19-induced-heart-issues-risin
https://www.thailandmedical.news/news/breaking-swedish-study-shows-that-covid-19-is-now-a-key-driver-for-heart-attacks-and-strokes
https://www.thailandmedical.news/news/alarming-study-findings-shows-that-sars-cov-2-disrupts-heart-muscle-contraction,-often-leading-to-heart-failure
https://www.thailandmedical.news/news/latest-covid-19-news-sars-cov-2-causes-heart-muscle-cells-cardiomyocytes-to-fuse-and-disrupts-heart-s-electrical-rhythm
https://www.thailandmedical.news/news/covid-19-warning-meta-study-of-published-studies-and-case-reports-indicates-that-myocarditis-is-a-threat-to-all-who-had-covid-19
Interestingly, there are so many published studies that show that quercetin helps with heart health and has numerous beneficial effects for the heart.
https://pubmed.ncbi.nlm.nih.gov/29966915/#:~:text=Quercetin%20exhibits%20significant%20heart%20related,oxidative%20stress%2C%20prevention%20of%20neuronal
https://www.nature.com/articles/srep30812
https://www.frontiersin.org/articles/10.3389/fcvm.2021.658400/full
https://link.springer.com/article/10.1007%2Fs13668-015-0137-3
https://www.dovepress.com/cardioprotective-effect-of-quercetin-and-sitagliptin-in-doxorubicin-in-peer-reviewed-fulltext-article-CMAR
https://www.tandfonline.com/doi/abs/10.1080/10715760600823128?journalCode=ifra20
https://pubs.acs.org/doi/10.1021/acsomega.0c01818
https://www.ajol.info/index.php/ijmu/article/view/39858
Since it has also been shown that some current COVID-19 vaccines might cause myocarditis issues in certain individuals, it is highly recommended for individuals to also take quercetin before and after vaccinations.
https://www.thailandmedical.news/news/breaking-german-health-authorities-advises-against-moderna-covid-19-vaccine-for-under-30s-due-to-small-risk-of-heart-inflammation
https://www.thailandmedical.news/news/breaking-uk-study-warns-that-occurrences-of-myocarditis-and-pericarditis-in-young-men-following-mrna-based-covid-19-vaccination-is-concerning
https://www.thailandmedical.news/news/breaking-study-published-in-new-england-journal-of-medicine-shows-that-pfizer-s-bnt162b2-covid-19-shot-increases-risk-of-myocarditis-by-threefold
https://www.thailandmedical.news/news/new-research-outlines-clinical-treatment-of-covid-19-vaccine-associated-myocarditis-like-conditions-in-hospitalized-patients-
Quercetin also has a lot of other documented benefits such as strengthening the immune system and helping to eradicate viral persistence.
https://www.dovepress.com/potential-clinical-benefits-of-quercetin-in-the-early-stage-of-covid-1-peer-reviewed-fulltext-article-IJGM
https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC6273625/#:~:text=Quercetin%20is%20known%20for%20its,suppresses%20interleukin%20IL%2D4%20production.
https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC6273625/#:~:text=Quercetin%20is%20known%20for%20its,suppresses%20interleukin%20IL%2D4%20production.
Numerous new studies and clinical trials in the last 7 months have also showed the merits of using quercetin to treat COVID-19.
https://pubmed.ncbi.nlm.nih.gov/34194240/
https://www.sciencedirect.com/science/article/pii/S2095177921001106
https://www.igi-global.com/chapter/quercetin-for-the-experimental-treatment-of-covid-19/285489
Some studies and clinical trials have also showed its effectiveness as a prophylaxis against the SARS-CoV-2 coronavirus.
https://clinicaltrials.gov/ct2/show/NCT04377789
https://journals.sagepub.com/doi/full/10.1177/2515690X211026193
https://www.sciencedirect.com/science/article/pii/S2212958820301403
When consuming quercetin supplements, always purchase supplements that also pairs it with bromelain as bromelain helps in its absorption and also enhances its properties.
Also always get quercetin supplements in crystalline forms that are encapsulated or even encapsulated liposomal quercetin but never get quercetin in liquid formats as they are highly degradable and its bioactivity is often rendered inactive after days. (Lots of supporting studies on these online)

Also, never buy brands of quercetin made in countries like India, Thailand, Myanmar, Vietnam, Malaysia, Indonesia, Philippines and China as most contain inferior compounds. The best brands for quercetin are Now Foods,Piping Rock, Doctor’s Best, Throne Research and Double Wood. (We do not have any vested interest with these brands nor are we paid any monies by them….wish we were though!..lol!...our recommendations are based on past laboratory analysis of various brands of quercetin)
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