Quercetin is already widely used a dietary supplement ingredient, although it’s rarely used just by itself. More commonly, quercetin is combined with other complementary supplements or as part of a multi-ingredient formulas that target a specific health condition or factor. For example, one popular quercetin combination marketed by many supplement brands combines quercetin with the pineapple enzyme bromelain in a popular formula for allergy-like symptoms. You’ll also see quercetin in prostate formulas and products for vascular health, too. A new human quercetin study is bound to attract much more interest in quercetin since it shows beneficial effects on both blood pressure and harmful LDL cholesterol. And these effects were demonstrated in people with metabolic syndrome, who are already at high risk for hypertension and cholesterol imbalances. Better, yet, quercetin is inexpensive, natural, safe and very well-tolerated with none of the side-effects of either blood pressure or cholesterol drugs.