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Effectiveness of the quercetin use in patients with COVID-19 with concomitant type 2 diabetes mellitus

Tylishchak et al., Wiadomości Lekarskie, doi:10.36740/WLek/191875
Dec 2024  
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Recovery, RI II 40% Improvement Relative Risk Hospitalization time 15% Quercetin  Tylishchak et al.  LATE TREATMENT  RCT Is late treatment with quercetin beneficial for COVID-19? RCT 60 patients in Ukraine Shorter hospitalization with quercetin (p<0.000001) c19early.org Tylishchak et al., Wiadomości Lekarskie, Dec 2024 Favorsquercetin Favorscontrol 0 0.5 1 1.5 2+
Quercetin for COVID-19
24th treatment shown to reduce risk in July 2021, now with p = 0.002 from 12 studies.
No treatment is 100% effective. Protocols combine treatments.
5,100+ studies for 112 treatments. c19early.org
RCT 60 hospitalized COVID-19 patients with type 2 diabetes showing quercetin treatment decreased levels of inflammatory markers (interleukin-6, CRP, ferritin), reduced length of hospital stay, and improved capillaroscopy measures compared to standard care. Quercetin was administered at 0.5g intravenously once daily for 10 days. The authors hypothesize the benefits may be due to the anti-inflammatory, antioxidant and endothelium-protective effects of quercetin,
Bioavailability. Quercetin has low bioavailability and studies typically use advanced formulations to improve bioavailability which may be required to reach therapeutic concentrations.
This is the 11th COVID-19 RCT for quercetin, which collectively show efficacy with p=0.0023.
This is the 12th COVID-19 controlled study for quercetin, which collectively show efficacy with p=0.002.
risk of no recovery, 40.0% lower, RR 0.60, p = 0.71, treatment 3 of 30 (10.0%), control 5 of 30 (16.7%), NNT 15, SpO2<90.
hospitalization time, 14.6% lower, relative time 0.85, p < 0.001, treatment mean 13.77 (±0.75) n=30, control mean 16.13 (±0.79) n=30.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Tylishchak et al., 6 Dec 2024, Randomized Controlled Trial, Ukraine, peer-reviewed, 7 authors.
This PaperQuercetinAll
Effectiveness of the quercetin use in patients with COVID-19 with concomitant type 2 diabetes mellitus
Zoriana Tylishchak, Oleksandra Pryshliak, Oleksandr Boichuk, Sergiy Fedorov, Andrii Protsyk, Taras Kobryn, Ruslan Miziuk
Wiadomości Lekarskie, doi:10.36740/wlek/191875
Aim: To conduct a comparative analysis of the effectiveness of basic therapy and basic therapy with the inclusion of quercetin in patients with COVID-19 with concomitant type 2 diabetes. Materials and Methods: There were examined 60 patients with COVID-19 with concomitant T2DM. Upon admission into the hospital and again after 10 days, serum levels of interleukin-6, C-reactive protein, procalcitonin, ferritin, endothelin-1 were determined, and capillaroscopy of the nail plate was performed. Patients of the group I (30) against the background of protocol therapy received 0.5 g of quercetin intravenously once a day for 10 days. Patients of the group II (30) received to basic therapy. Results: After the treatment in patients of the group I general weakness decreased, body temperature normalized, improved saturation indicators, the level of acute-phase parameters (interleukin-6, CRP and ferritin) significantly decreased, a positive effect of quercetin on the level of D-dimer in blood serum was noted, indices of pericapillary edema and hemosiderin deposition significantly decreased, indices diameter of the arterial part of the capillary and capillary network density significantly increased. Conclusions: The use of quercetin against the background of basic therapy in patients with COVID-19 and concomitant T2DM reliably reduces the level of acute-phase indices, has an important clinical significance for reducing endothelial dysfunction and for preventing thrombotic complications.
CONFLICT OF INTEREST The Authors declare no conflict of interest CORRESPONDING AUTHOR Oleksandr Boichuk Ivano-Frankivsk National Medical University 2 Halytska st, 76018 Ivano-Frankivsk, Ukraine e-mail: opboy@ukr.net ORCID AND CONTRIBUTIONSHIP Zoriana Tylishchak: 0000-0002-7891-2849 Oleksandra Pryshliak: 0000-0002-3256-5108 Oleksandr Boichuk: 0000-0003-0646-6533 Sergiy Fedorov: 0000-0002-2202-4279 Andrii Protsyk: 0000-0003-2041-5337 Taras Kobryn: 0000-0003-4381-6045 Ruslan Miziuk: 0000-0002-7829-9044
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Late treatment
is less effective
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