| NCT01708278 | Chronic Obstructive Pulmonary Disease | Drug: Quercetin|Other: Placebo - sugar chew | University of Michigan|National Institutes of Health (NIH)|Quercegen Pharmaceuticals|National Center for Complementary and Integrative Health (NCCIH) | Phase 1 | 2014-02-01 | 2016-10-31 |
| NCT01376011 | Stroke|Problem of Aging | Dietary Supplement: quercetin/placebo | Brigham and Women's Hospital|National Institute on Aging (NIA) | Early Phase 1 | 2009-06-01 | 2015-01-26 |
| NCT01720147 | Fanconi Anemia | Drug: Quercetin (dietary supplement) | Children's Hospital Medical Center, Cincinnati | Phase 1 | 2012-07-01 | 2016-08-19 |
| NCT02226484 | Gastroesophageal Reflux Disease|GERD|Acid Reflux|Reflux | Drug: Quercetin | University of North Carolina, Chapel Hill|National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) | Phase 1 | 2014-08-01 | 2016-12-19 |
| NCT01438320 | Chronic Hepatitis C | Dietary Supplement: Quercetin | University of California, Los Angeles|American Association for Cancer Research|Tower Cancer Research Foundation|National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) | Phase 1 | 2011-07-01 | 2015-03-18 |
| NCT00402623 | Sarcoidosis | Dietary Supplement: quercetin|Other: placebo | Maastricht University Medical Center|ZonMw: The Netherlands Organisation for Health Research and Development | | 2006-01-01 | 2017-02-22 |
| NCT01691404 | Hypertension|Endothelial Dysfunction | Dietary Supplement: Epicatechin|Dietary Supplement: Quercetin|Dietary Supplement: Placebo | Wageningen University|Top Institute Food and Nutrition | | 2012-09-01 | 2013-04-22 |
| NCT01732393 | Chemotherapy Induced Oral Mucositis | Drug: oral quercetin capsules|Drug: Placebo | Mashhad University of Medical Sciences | Phase 1|Phase 2 | 2010-01-01 | 2012-12-04 |
| NCT01168739 | Heat Acclimation and Thermotolerance | Dietary Supplement: Quercetin|Dietary Supplement: Placebo | University of New Mexico|Gatorade Sports and Science Institute|Quercegen Pharmaceuticals|Nash Finch Company | | 2009-09-01 | 2010-07-21 |
| NCT01912820 | Adenocarcinoma of the Prostate|Recurrent Prostate Cancer|Stage I Prostate Cancer|Stage IIA Prostate Cancer|Stage IIB Prostate Cancer|Stage III Prostate Cancer|Stage IV Prostate Cancer | Dietary Supplement: green tea extract|Drug: quercetin|Other: placebo|Procedure: therapeutic conventional surgery|Other: laboratory biomarker analysis | Jonsson Comprehensive Cancer Center|National Cancer Institute (NCI) | Phase 1 | 2014-01-01 | 2016-09-12 |
| NCT01722669 | Healthy | Drug: isoquercetin or quercetin | Beth Israel Deaconess Medical Center | Early Phase 1 | 2012-05-01 | 2017-03-02 |
| NCT01839344 | Diabetes Mellitus, Type 2 | Dietary Supplement: Quercetin|Drug: Acarbose|Drug: placebo | Bastyr University | Phase 2 | 2013-05-01 | 2015-03-16 |
| NCT01375101 | Atrophic Oral Lichen Planus|Erosive Oral Lichen Planus | Drug: placebo|Drug: Quercetin | Mashhad University of Medical Sciences | Phase 1 | 2010-04-01 | 2011-07-25 |
| NCT01538316 | Primary Prevention of Prostate Cancer | Dietary Supplement: Quercetin supplement|Dietary Supplement: Genistein supplement|Dietary Supplement: Placebo | University of Hohenheim|University Hospital Tuebingen|Quercegen Pharmaceuticals | | 2012-03-01 | 2012-05-13 |
| NCT02989129 | Polyneuropathies and Other Disorders of the Peripheral Nervous System|Chemotherapy Induced Neuropathic Pain | Behavioral: Questionnaires|Drug: Quercetin | M.D. Anderson Cancer Center | Early Phase 1 | 2017-03-01 | 2016-12-12 |
| NCT00065676 | Diabetes Mellitus|Obesity | Procedure: Oral glucose tolerance test | National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)|National Institutes of Health Clinical Center (CC) | Phase 2 | 2003-07-25 | 2017-01-24 |
| NCT01881919 | Hyperuricemia|Gout|Kidney Calculi|Diabetes|Cardiovascular Disease | Dietary Supplement: Treatment|Dietary Supplement: Control | University of Leeds | Early Phase 1 | 2013-02-01 | 2015-03-20 |
| NCT00913081 | Flushing | Dietary Supplement: Quercetin|Dietary Supplement: Placebo | University of Pennsylvania|Abbott | Phase 4 | 2009-02-01 | 2015-02-19 |
| NCT01847521 | Autism Spectrum Disorders | Dietary Supplement: Luteolin, Quercetin and Rutin combined in a capsule | Attikon Hospital | Phase 2 | 2011-12-01 | 2013-05-02 |
| NCT01348204 | Cystic Fibrosis | Other: quercetin | University of Alabama at Birmingham|National Institutes of Health (NIH) | Phase 2 | 2010-03-01 | 2012-01-27 |
