Patients with high blood pressure can drink pu-erh tea. Pu-erh tea is rich in vitamins such as vitamin C, vitamin B1, vitamin B2, vitamin E, amino acids and potassium ions, which can lower total cholesterol and triglycerides, and there are clear studies showing that the reduction of blood lipids is helpful for blood pressure control. Vitamin C can improve endothelial dysfunction, increase nitrogen oxide levels, is a powerful antioxidant and can reduce systemic vascular resistance, lowering blood pressure by an average of 7/4mmHg, which is useful in treating hypertension and preventing atherosclerosis. The potassium ions in pu-erh tea can also significantly lower blood pressure and reduce the risk of arrhythmia, so pu-erh tea is beneficial to patients with hypertension.