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Quercetin is a natural compound implicated in all of our pursuits: heart health, stamina, immune system, and more. Quercetin is a flavonoid antioxidant found in plant foods. It’s technically considered a “plant pigment,” which is why it’s found in dark, nutrient-dense fruits and vegetables.

Quercetin, is soluble in acetic acid. It turns yellow in alkaline aqueous solutions and is almost insoluble in water. Ethanol solutions have a bitter taste. It can be used as a medicine and has good expectorant and cough relieving effects, as well as certain anti asthma effects. In addition, it also has effects such as lowering blood pressure, enhancing capillary resistance, reducing capillary fragility, lowering blood lipids, dilating coronary arteries, and increasing coronary blood flow. Used to treat chronic bronchitis. It also has an auxiliary therapeutic effect on patients with coronary heart disease and hypertension.