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Randomized Proof-of-Concept Trial to Evaluate the Safety and Explore the Effectiveness of Resveratrol, a Plant Polyphenol, for COVID-19

Randomized Double-Blind Placebo-Controlled Proof-of-Concept Trial of Resveratrol, a Plant Polyphenol, for the Outpatient Treatment of Mild Coronavirus Disease (COVID-19)

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04400890
Enrollment
105
Registered
2020-05-26
Start date
2020-09-13
Completion date
2021-03-01
Last updated
2023-02-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19

Keywords

Coronavirus, SARS-CoV-2, COVID, Vitamin D3, Cholecalciferol, Supplement, Polyphenol, Resveratrol, Stilbene, phytoalexin

Brief summary

Resveratrol is a plant polyphenol (that is sold commercially as a supplement) that might help fight coronavirus as well as help protect the body from the effects of disease (COVID-19) caused by the infection. In this proof-of-concept pilot study we will compare the effects of resveratrol to placebo to assess the safety of the resveratrol and explore effectiveness.

Detailed description

This randomized placebo-controlled trial is for the outpatient treatment of (Coronavirus Disease 2019) COVID-19. The purpose of this trial is to evaluate the safety and explore the effectiveness of resveratrol, a plant polyphenol, being re-purposed for patients with early COVID-19. Published in vitro data supports that this polyphenol inhibits coronavirus replication while separately published in silico (computer molecular docking analysis) reports have identified specific molecular targets of resveratrol against (Severe Acute Respiratory Syndrome - Coronavirus 2) SARS-CoV-2. Animal studies also demonstrate that resveratrol is effective at preventing lung injury and death in certain animal models of viral infections. Furthermore, the products long history as an anti-inflammatory might prevent the cytokine storm that is associated with worse outcomes in COVID-19. 200 subjects, 45 and older, (100 receiving the plant polyphenol, 100 receiving placebo) will be enrolled in study to compare whether taking resveratrol will reduce the rate of hospitalization. Subjects will take capsules 4 times a day for a minimum of 7 days (up to 15 days depending on duration of symptoms) plus both groups will receive Vitamin D3 100,000 IU to augment the effects of resveratrol. Resveratrol will be given as 1gm 4 times per day. Placebo tablets will contain brown rice flour in visually identical capsules. The primary outcome measure for this trial is reduction in hospitalization at 21 days from enrollment.

Interventions

DRUGResveratrol

Resveratrol vs placebo given for 15 days.

DIETARY_SUPPLEMENTVitamin D3

Vitamin D3 100,000 IU given on day one.

Sponsors

Marvin McCreary, MD
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
45 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Outpatients who test positive for infection with SARS-CoV-2. * Age ≥45 years * Mild COVID-19 based on World Health Organization (WHO) Baseline Severity Categorization * Symptom duration ≤ 10 days, or \<72 hours of new respiratory symptoms. * Patient must have access to the internet or a smartphone to complete surveys. * English-speaking patients

Exclusion criteria

* Diagnosed or suspected cognitive impairment that would prevent the patient from cooperating with study procedures, as judged by the screening clinician * Asymptomatic patients (e.g. patients who were screened without symptoms but tested positive) * Known or suspected liver disease or Hepatitis C * Known kidney disease with estimate Glomerular Filtration Rate (eGFR) \<60 * Patients on warfarin, Novel Oral Anticoagulants (NOACs), HIV Protease Inhibitors, immunosuppressants, hydroxychloroquine/chloroquine, and other medication with a narrow therapeutic window. * Allergy to grapes or rice. * Co-morbidities with a high likelihood of hospitalization within 30 days (e.g., current cancer treatment, severe Chronic Obstructive Pulmonary Disease (COPD) or Congestive Heart Failure (CHF)) * Currently pregnant * Hospitalization

Design outcomes

Primary

MeasureTime frameDescription
Hospitalization Rates for COVID-1921 days from study randomizationNumber of study participants admitted to the hospital within 21 days of randomization

Secondary

MeasureTime frameDescription
ICU Admission Rates21 days from randomizationNumber of study participants admitted within 21 who subsequently get admitted to the ICU
Invasive Ventilation Rates21 days from randomizationNumber of study participants who get admitted with 21 day of randomization who receiving invasive ventilation.
Pulmonary Embolism21 days from start of randomization.Number of study participants are diagnosed with pulmonary embolism with 21 day of randomization
DeathWithin 21 days from randomizationNumber of study participants who died with 21 day of randomization
Pneumonia21 days from randomizationNumber of study participants are diagnosed with pneumonia with 21 day of randomization

Other

MeasureTime frameDescription
Adverse Events60 days from randomizationDiarrhea, nausea, abdominal cramping

Countries

United States

Participant flow

Recruitment details

Between September 13, 2020 and December 11, 2020, 1,694 patients were telephoned within 24-h of testing positive for COVID-19 to be recruited into the clinical trial . One-hundred-five were enrolled and randomized. Five withdrew after receiving treatment packets (four withdrew before starting treatment and one withdrew after one treatment day citing too many pills as reason for withdrawal).

Pre-assignment details

One-hundred-five subjects were enrolled and randomized. Four participants withdrew before starting treatment. One participant withdrew after one treatment day citing too many pills as reason for withdrawal.

Participants by arm

ArmCount
Resveratrol With Vitamin D3
Resveratrol 1000mg four times per day for up to 15 days (7 days minimum). Vitamin D3 100,000 IU on day 1 Vitamin D3: Vitamin D3 100,000 IU given on day one.
53
Placebo With Vitamin D3
Placebo capsules 4 times per day for up to 15 days (7 days minimum). Vitamin D3 100,000 IU on day 1 Vitamin D3: Vitamin D3 100,000 IU given on day one.
52
Total105

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyWithdrawal by Subject32

Baseline characteristics

CharacteristicTotalResveratrol With Vitamin D3Placebo With Vitamin D3
Age, Continuous56.0 years
STANDARD_DEVIATION 8.98
55.7 years
STANDARD_DEVIATION 8.55
56.3 years
STANDARD_DEVIATION 9.46
Angiotensin Converting Enzyme Inhibitor (ACEI) / Angiotensin Receptor Blocker (ARB) use15 Participants5 Participants10 Participants
BMI30.2 kg/m^2
STANDARD_DEVIATION 6.2
29.1 kg/m^2
STANDARD_DEVIATION 4.68
31.4 kg/m^2
STANDARD_DEVIATION 7.32
Cardiovascular Disease6 Participants3 Participants3 Participants
Chronic Lung Disease19 Participants10 Participants9 Participants
Current Smoker3 Participants1 Participants2 Participants
Diabetes Mellitus10 Participants5 Participants5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
2 Participants1 Participants1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
88 Participants43 Participants45 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
15 Participants9 Participants6 Participants
Former Smoker20 Participants8 Participants12 Participants
High Risk Comorbidity= NO73 Participants38 Participants35 Participants
High Risk Comorbidity= YES32 Participants15 Participants17 Participants
Immunocompromised0 Participants0 Participants0 Participants
Inhaled Steroid Use4 Participants0 Participants4 Participants
Liver Disease0 Participants0 Participants0 Participants
Oral Steroid Use4 Participants2 Participants2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Black or African American
4 Participants2 Participants2 Participants
Race (NIH/OMB)
More than one race
4 Participants1 Participants3 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants2 Participants1 Participants
Race (NIH/OMB)
White
93 Participants47 Participants46 Participants
Renal Disease0 Participants0 Participants0 Participants
Sex: Female, Male
Female
62 Participants29 Participants33 Participants
Sex: Female, Male
Male
43 Participants24 Participants19 Participants
Vitamin D use8 Participants6 Participants2 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 500 / 50
other
Total, other adverse events
50 / 5050 / 50
serious
Total, serious adverse events
4 / 508 / 50

Outcome results

Primary

Hospitalization Rates for COVID-19

Number of study participants admitted to the hospital within 21 days of randomization

Time frame: 21 days from study randomization

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Resveratrol With Vitamin D3Hospitalization Rates for COVID-191 Participants
Placebo With Vitamin D3Hospitalization Rates for COVID-193 Participants
Secondary

Death

Number of study participants who died with 21 day of randomization

Time frame: Within 21 days from randomization

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Resveratrol With Vitamin D3Death0 Participants
Placebo With Vitamin D3Death0 Participants
Secondary

ICU Admission Rates

Number of study participants admitted within 21 who subsequently get admitted to the ICU

Time frame: 21 days from randomization

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Resveratrol With Vitamin D3ICU Admission Rates0 Participants
Placebo With Vitamin D3ICU Admission Rates0 Participants
Secondary

Invasive Ventilation Rates

Number of study participants who get admitted with 21 day of randomization who receiving invasive ventilation.

Time frame: 21 days from randomization

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Resveratrol With Vitamin D3Invasive Ventilation Rates0 Participants
Placebo With Vitamin D3Invasive Ventilation Rates0 Participants
Secondary

Pneumonia

Number of study participants are diagnosed with pneumonia with 21 day of randomization

Time frame: 21 days from randomization

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Resveratrol With Vitamin D3Pneumonia4 Participants
Placebo With Vitamin D3Pneumonia8 Participants
Secondary

Pulmonary Embolism

Number of study participants are diagnosed with pulmonary embolism with 21 day of randomization

Time frame: 21 days from start of randomization.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Resveratrol With Vitamin D3Pulmonary Embolism1 Participants
Placebo With Vitamin D3Pulmonary Embolism1 Participants
Other Pre-specified

Adverse Events

Diarrhea, nausea, abdominal cramping

Time frame: 60 days from randomization

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026