Myricetin is a naturally occurring flavonol, a flavonoid found in many grapes, berries, fruits, vegetables, herbs, as well as other plants. Walnuts are a rich dietary source. Trace amounts can be found as glycosides.
[1] It is one of the phenolic compounds present in red wine.
[2] Myricetin has antioxidant properties. In vitro research suggests that myricetin in high concentrations can modify LDL cholesterol such that uptake by white blood cells is increased. A Finnish study correlated high myricetin consumption with lowered rates of prostate cancer.
[3]Another 8-year study found that three flavonols (kaempferol, quercetin, and myricetin) reduced the risk of pancreatic cancer by 23 percent