Quercetin in the Prevention of Covid-19 Infection
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT05037240 |
Recruitment Status :
Completed
First Posted : September 8, 2021
Last Update Posted : September 8, 2021
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Covid19 | Dietary Supplement: Quercetin Combination Product: Placebo | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 80 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Participant, Outcomes Assessor) |
Primary Purpose: | Prevention |
Official Title: | Randomized, Placebo-controlled Clinical Trial to Evaluate the Efficacy of an Oral Nutritional Supplement Based on Quercetin in the Prevention of Covid-19 Infection for a Duration of 3 Months |
Actual Study Start Date : | January 12, 2021 |
Actual Primary Completion Date : | April 6, 2021 |
Actual Study Completion Date : | May 25, 2021 |

Arm | Intervention/treatment |
---|---|
Active Comparator: Intervention Group |
Dietary Supplement: Quercetin
Quercetin (500 mg), 2 times a day for 3 months |
Placebo Comparator: Placebo |
Combination Product: Placebo
500 mg, 2 times a day for 3 months |
- Prevention of Covid-19 infection [ Time Frame: Absence of Covid-19 infection at 3 months ]A nasopharyngeal antigenic swab

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Absence of Covid-19 infection
Exclusion Criteria:
- Previous Sars-Cov-2 infection demonstrated with antibody positivity through venous sampling
- Demonstrated presence of Sars-Cov-2 through a nasopharyngeal antigenic swab before the start of oral nutritional supplementation

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05037240
Italy | |
Mariangela Rondanelli | |
Pavia, Italy, 27100 |
Responsible Party: | Azienda di Servizi alla Persona di Pavia |
ClinicalTrials.gov Identifier: | NCT05037240 |
Other Study ID Numbers: |
1222/01022021 |
First Posted: | September 8, 2021 Key Record Dates |
Last Update Posted: | September 8, 2021 |
Last Verified: | September 2021 |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
COVID-19 Infections Pneumonia, Viral Pneumonia Respiratory Tract Infections Virus Diseases Coronavirus Infections Coronaviridae Infections Nidovirales Infections |
RNA Virus Infections Lung Diseases Respiratory Tract Diseases Quercetin Antioxidants Molecular Mechanisms of Pharmacological Action Protective Agents Physiological Effects of Drugs |