Quercetin has the effects of relieving cough and asthma, reducing swelling and diuresis, clearing heat and detoxifying, and increasing immunity. It can be used to treat insomnia, forgetfulness, chest tightness, shortness of breath, palpitations, palpitation, dreaminess, memory loss, waist soreness, limb weakness, dry mouth, bitter mouth, and chronic bronchitis. It can lower blood pressure, lower blood lipids, lower cholesterol, enhance capillary resistance, and reduce garbage and toxins in capillaries. Prevent coronary arteriosclerosis, coronary heart disease, angina pectoris, myocardial ischemia, and arrhythmia