Biological Effects of Quercetin in COPD Phase II (polyphenols)
Chronic Obstructive Pulmonary Disease
About this trial
This is an interventional treatment trial for Chronic Obstructive Pulmonary Disease
Eligibility Criteria
Inclusion Criteria: Subjects with COPD, 40 - 80 yrs of age Post-bronchodilator forced expiratory volume (FEV)1/forced vital capacity (FVC) ratio 0.7, FEV1% predicted between 40 to 70 Both active and ex-smokers with at least 10 pack-years history of smoking COPD patients taking H2 antagonists, loperamide or loratadine and willing to stop during the study period Exclusion Criteria: Known allergy/sensitivity to quercetin Subjects with primary current diagnosis of asthma Upper respiratory tract infection within two weeks of the screening visit Acute bacterial infection requiring antibiotics within two weeks of screening Emergency treatment or hospitalization within one month of screening for any reasons Unwillingness to stop flavonoid supplementation Dietary intake exceeding or averaging 150 mg quercetin daily as assessed by Bioflavonoid Food and Supplement Screener Daily warfarin or cyclosporine (Neoral, Sandimmune) Subjects taking H2 antagonists (cimetidine, ranitidine), loperamide (Imodium) or loratadine and not willing to stop during study period Lung cancer history or undergoing chemo- or radiation therapy Inflammatory bowel disease Subjects with no detectable levels of inflammatory CRP or SP-D in blood and/or IL- 1β or 8-isoprostane in the exhaled breath condensate Women of child-bearing age and unwilling to take pregnancy test Child-bearing age, who are unwilling to use adequate contraception or abstain during the course of the study. Pregnant or lactating mothers
Sites / Locations
- Nathaniel Marchetti
Arms of the Study
Arm 1
Arm 2
Arm 3
Active Comparator
Active Comparator
Placebo Comparator
Quercetin 1000 mg/day
Quercetin 500mg/day
Placebo
Quercetin 1000 mg/day Quercetin is provided as caplet and each caplet will have 500 mg of quercetin Quercetin will be administered orally twice daily, one half dose (1 caplet) in the morning after breakfast and one half dose (1 caplet) in the evening after dinner for six months.
Quercetin 500 mg/day Quercetin is provided as caplet and each caplet will have 500 mg of quercetin Quercetin will be administered orally once daily, (1 caplet) in the morning after breakfast and matching placebo in the evening after dinner for six months. The placebo is added to match the number of caplets with 1000 mg/day arm
Placebo is also provided as caplets that is similar to quercetin in color, taste and texture and will contain all the stabilizers and the inactive ingredients that is present in the quercetin chews. Placebo will be administered orally twice daily, one half dose (1caplet) in the morning after breakfast and one half dose (1 caplet) in the evening after dinner for six months.