CompletedEarly Phase 1

Effect of Quercetin Supplements on Healthy Males: a Four-Week Randomized Cross-Over Trial

United Kingdom22 participantsStarted 2013-02

Plain-language summary

The purpose of this study was to test the effect of chronic consumption of Quercetin 500 mg tablets on blood uric acid and other biomarkers in adult males.

Who can participate

Age range

19 Years – 65 Years

Sex

MALE

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Written informed consent * Plasma Uric Acid \> 300 micro Mole/L * Generally Healthy Exclusion Criteria: * Body Mass Index (BMI) ≥ 30 kg/m² or \<18.5 kg/m² * Unable or unwilling to comply with the protocol, or likely to leave the study before its completion. * Who would undertake important change in physical exercise or vigorous sport competitions during the study period. * regularly drink more than 3 units of alcohol every day * smokers * have history of treated hyperuricemia, gout and/ or kidney stone * have intestinal disorders

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Risk of getting hyperuricemia assessed by the measure of plasma uric acid.

Timeframe: Fasting blood samples are taken on day 1, day 15 and day 29 of each arm

Trial details

NCT IDNCT01881919

SponsorUniversity of Leeds

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2014-04

View on ClinicalTrials.gov More Hyperuricemia trials