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c19early.org COVID-19 treatment researchQuercetinQuercetin (more..)
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Applications of quercetin for the prevention of COVID-19 in healthcare workers

Turobkulovich et al., Emergent: Journal of Educational Discoveries and Lifelong Learning, doi:10.17605/OSF.IO/NSJ6B, Jan 2023
https://c19early.org/turobkulovich.html
Mortality 96% improvement lower risk ← → higher risk Symp. case 98% Quercetin  Turobkulovich et al.  PROPHYLAXIS Is prophylaxis with quercetin beneficial for COVID-19? Prospective study of 90 patients in Uzbekistan Lower mortality (p<0.0001) and fewer symptomatic cases (p<0.0001) c19early.org Turobkulovich et al., Emergent: J. Edu.., Jan 2023 0 0.5 1 1.5 2+ RR
Quercetin for COVID-19
27th treatment shown to reduce risk in July 2021, now with p = 0.002 from 12 studies.
No treatment is 100% effective. Protocols combine treatments.
6,200+ studies for 200+ treatments. c19early.org
Prospective study of healthcare workers in Uzbekistan showing lower mortality and cases with quercetin prophylaxis. Very minimal details are provided, there is no baseline information, and control mortality is very high.
Bioavailability. Quercetin has low bioavailability and studies typically use advanced formulations to improve bioavailability which may be required to reach therapeutic concentrations.
This study is excluded in meta analysis: minimal information, no baseline details, very high control mortality without explanation.
Study covers vitamin C and quercetin.
risk of death, 96.4% lower, RR 0.04, p < 0.001, treatment 0 of 70 (0.0%), control 6 of 20 (30.0%), NNT 3.3, relative risk is not 0 because of continuity correction due to zero events (with reciprocal of the contrasting arm).
risk of symptomatic case, 98.5% lower, RR 0.02, p < 0.001, treatment 1 of 70 (1.4%), control 19 of 20 (95.0%), NNT 1.1.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Turobkulovich et al., 25 Jan 2023, prospective, Uzbekistan, peer-reviewed, 2 authors.
$0 $500 $1,000+ Efficacy vs. cost for COVID-19 treatment protocols c19early.org November 2025 Uzbekistan United Kingdom Russia USA Sudan Angola Colombia Kenya Mozambique Pakistan Argentina Vietnam Peru Philippines Spain Brazil Italy France Japan Nepal Ethiopia Iran Ghana Mexico South Korea Germany Bangladesh Saudi Arabia Algeria Morocco Yemen Poland India DR Congo Madagascar Thailand Uganda Venezuela Nigeria Egypt Bolivia Taiwan Zambia Fiji Bosnia-Herzegovina Côte d'Ivoire Eritrea Bulgaria Greece Slovakia Singapore Iceland New Zealand Czechia Mongolia Israel Trinidad and Tobago Hong Kong North Macedonia Belarus Qatar Panama Serbia CAR Uzbekistan favored low-cost treatments.The average efficacy of treatments was moderate.Low-cost treatments improve early treatment, andprovide complementary/synergistic benefits. More effective More expensive 75% 50% 25% ≤0%
$0 $500 $1,000+ Efficacy vs. cost for COVID-19treatment protocols worldwide c19early.org November 2025 Uzbekistan United Kingdom Russia USA Sudan Angola Colombia Kenya Mozambique Pakistan Argentina Vietnam Peru Philippines Spain Brazil Italy France Japan Nepal Ethiopia Iran Ghana Mexico South Korea Germany Bangladesh Saudi Arabia Algeria Morocco Yemen Poland India DR Congo Madagascar Thailand Uganda Venezuela Nigeria Egypt Bolivia Taiwan Zambia Fiji Côte d'Ivoire Eritrea Togo Bulgaria Greece Slovakia Singapore New Zealand Malawi Czechia Mongolia Israel Trinidad and Tobago North Macedonia Belarus Qatar Panama Serbia Syria Bosnia-Herzegovina Uzbekistan favored low-cost treatments.The average efficacy was moderate.Low-cost protocols improve early treatment,and add complementary/synergistic benefits. More effective More expensive 75% 50% 25% ≤0%
APPLICATIONS OF QUERCETIN FOR THE PREVENTION OF COVID-19 IN HEALTHCARE WORKERS Babanazarov Umid Turobkulovich, Sharopov Umarxo`ja Ravshanovich Bukhara State Medical Institute
The topic of coronavirus infection is becoming more and more relevant, especially during the pandemic of this infection. Also, it is important to study the effects of known drugs on the infectivity and course of SARS-CoV-2 infection. This article reveals significant positive results when using the drug quertin and its combination with ascorbic acid on the morbidity rate of medical workers working with COVID-19 patients.
References
Babanazarov Umid Turobkulovich, Kayimov, Tuymurodovich, Coronavirus Infection -A Trigger Factor in Liver Damage, Eurasian Research Bulletin
Oblokulov, Musaeva, Elmurodova, Clinical and epidemiological characteristics of a new coronavirus infection (COVID-19) // New day in medicine
Salieva, Azizov, Dadakhonova, Musayeva, On improving health care// Achievements of science and education
Samadov, Musayeva, The trend of the development of the epidemic process of hepatitis C in Uzbekistan // Materials of the IV International Scientific and Practical Conference "Liki -lyudini. Suchasni problems pharmacotherapy i priznachennya likarskikh zasobiv
Sh, Saitov Sh, Nabieva, Nutritional requirements and the use of biologically active additives in COVID-19 // New Day in medicine
Бабаназаров, Уроков, Бахронов, Заболевания, None, ПЕЧЕНИ ВО ВРЕМЯ ПАНДЕМИИ COVID-19
DOI record: { "DOI": "10.17605/OSF.IO/NSJ6B", "URL": "https://osf.io/nsj6b/", "abstract": "The topic of coronavirus infection (COVID-19) is becoming more and more relevant, especially during the pandemic of this infection. Also, it is important to study the effects of known drugs on the infectivity and course of SARS-CoV-2 infection. This article reveals significant positive results when using the drug quertin and its combination with ascorbic acid on the morbidity rate of medical workers working with COVID-19 patients.", "author": [ { "literal": "EditorJournals And Conferences" } ], "container-title": "Open Science Framework", "contributor": [ { "literal": "Open Science Framework" } ], "copyright": "CC-By Attribution 4.0 International", "id": "https://doi.org/10.17605/osf.io/nsj6b", "issued": { "date-parts": [ [ 2023, 1, 25 ] ] }, "publisher": "Open Science Framework", "title": "APPLICATIONS OF QUERCETIN FOR THE PREVENTION OF COVID-19 IN HEALTHCARE WORKERS", "type": "article-journal" }
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Please send us corrections, updates, or comments. c19early involves the extraction of 200,000+ datapoints from thousands of papers. Community updates help ensure high accuracy. Treatments and other interventions are complementary. All practical, effective, and safe means should be used based on risk/benefit analysis. No treatment or intervention is 100% available and effective for all current and future variants. We do not provide medical advice. Before taking any medication, consult a qualified physician who can provide personalized advice and details of risks and benefits based on your medical history and situation. IMA and WCH provide treatment protocols.
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