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Zinc and Green Tea Extract for Community Respiratory Viral Infections

NCT04898023 · Status: TERMINATED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 17

Last updated 2025-03-07

Study results available
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Summary

Zinc and green tea supplementation have both been independently studied for supporting immune health during cold and flu-like illness in non-hospitalized patients with clinical trials demonstrating promising but inconsistent results. Combination therapy may offer an improved effect as the antioxidant compounds found in green tea have been shown to increase cellular zinc concentrations thereby inhibiting viral replication. This study seeks to evaluate the effect of combination supplementation using established doses of zinc and green tea extract on symptom duration and severity from cold and flu-like illness, including COVID-19, in adult community patients enrolled in a randomized placebo-controlled trial.

Conditions

  • Respiratory Viral Infection

Interventions

DRUG

zinc-green tea extract-ascorbic acid

Compounded capsules containing each zinc citrate, green tea extract, and ascorbic acid.

DRUG

Placebo

Compounded capsules containing microcrystalline cellulose.

Sponsors & Collaborators

  • University of Missouri-Columbia

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2022-09-21
Primary Completion
2023-10-31
Completion
2023-12-20
FDA Drug
Yes

Countries

  • United States

Study Locations

More Related Trials

Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04898023 on ClinicalTrials.gov