Quercetin is a bioflavonoid found in red wine, green tea, onions, and a variety of fruits and vegetables. Its antioxidant
and anti-inflammatory activities can protect cellular structures and blood vessels from free radical damage. A good vasodilator,
quercetin relaxes the vasculature and lowers blood pressure.
Recent studies and clinical trials have confirmed claims that quercetin has activity against cancer tumors, prostatitis, and
interstitial cystitis. Correlations have been seen between higher consumption of quercetin and lower incidence of asthma,
lung cancer, and type 2 diabetes. Quercetin also inhibits an enzyme that breaks down the neurotransmitter norepinephrine,
thereby raising norepinephrine levels and causing an increase in fat utilization.
Quercetin acts as a bioavailability enhancer for many other substances by slowing their metabolic conversion to other substances.
Quercetin’s bioavailability is more than 36% and its half-life in the body is more than 20 hours.