Clinical trial Recruiting at 1 site Interventional Ages 18 to 70

Using xanthohumol to reduce symptoms of viral infections

Official title: Xanthohumol in the Prevention of Virus-mediated Upper Respiratory Tract Infections in Humans

Run by University of Vienna · NCT06286657 · Data updated 2026-11-12

This study is testing if taking xanthohumol daily can help people feel better and recover faster from viral infections compared to a placebo.

More Viral Infection trials

Quick facts

Study typeInterventional
Ages18 Years to 70 Years
SexAll
Enrollment100 (estimated)
SponsorUniversity of Vienna
Academic / other
Locations1 site (Vienna)
StatusRecruiting
StartedAugust 1, 2023
Main results expectedOctober 31, 2025
Study endsDecember 30, 2025
Registry record updatedApril 15, 2025
Trial IDNCT06286657 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are healthy adults with a BMI between 18 and 28 kg/m².

Probably not a fit

Patients with food intolerances, chronic inflammatory diseases, or recent viral infections may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to evaluate whether regular oral supplementation of xanthohumol can lessen the severity and duration of symptoms associated with viral infections. Participants will be enrolled in a placebo-controlled trial where they will receive either xanthohumol or a placebo twice daily for 90 days. Blood samples will be collected at the start of the study, and again at 45 and 90 days, to monitor any changes. If participants develop a respiratory infection during the study, they will be asked to perform a self-test to assess their condition.

Why it matters

Potential benefit: If successful, this study could provide a new dietary supplement option for patients to manage viral infection symptoms more effectively.

How similar studies have gone: While the specific use of xanthohumol for viral infections is novel, similar studies on dietary supplements for symptom management have shown varying degrees of success.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* healthy
* BMI \>18 kg/m² or \< 28kg/m²

Exclusion Criteria:

* food intolerances
* food allergies
* chronic inflammatory diseases
* metabolic diseases
* viral or bacterial infections within the last 3 weeks of inclusion
* intake of immunosuppressive medication
* severe acute respiratory syndrome coronavirus type 2-infection in the last 4 months
* influenza infection in the "current" flu season

Where it's running

  • University of Vienna
    Vienna, Austria
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.