There is a rumor that drinking water with fresh ginkgo biloba leaves can lower blood pressure, which is inaccurate. Although ginkgo biloba can be used as medicine to improve microcirculation, it does not lower blood pressure. And fresh ginkgo biloba has a certain degree of toxicity, which may lead to toxic reactions. Therefore, it is not recommended for the general population to try it. Fresh ginkgo biloba has a certain degree of toxicity, which is rich in ginkgolic acid, this substance can be released in the process of infusion, dissolved in water, after drinking can act on the nervous system, resulting in nerve paralysis, dizziness, nausea and other problems, serious cases may also occur anaphylaxis. And the active substances in fresh ginkgo biloba leaves are poorly soluble in water and cannot be absorbed by the body through the method of drinking water. Therefore, the use of fresh ginkgo leaves in water is more harmful than beneficial. From the perspective of traditional Chinese medicine, ginkgo biloba leaves that have been concocted have some medicinal value, but they can not play a role in lowering blood pressure. Ginkgo biloba is mild, sweet, bitter, astringent, and belongs to the heart and lung meridians. If you follow the doctor’s instructions and use the concocted ginkgo biloba in water, or take it with other herbs, it can help to astringent lung and calm asthma, activate blood circulation and remove blood stasis. It is often used to treat lung deficiency, coughing and asthma, stroke and paralysis, chest paralysis and heart pain. However, it is not suitable for all people and should be used only after diagnosis and treatment by a regular herbalist, especially for children, pregnant women and people who are allergic to the ingredients of Ginkgo biloba.