Fresh ginkgo biloba can only be used as medicine after concoction, although it can improve microcirculation, but it can not play a role in lowering blood pressure. And fresh ginkgo biloba has a certain degree of toxicity, which is rich in ginkgolic acid, the substance in the process of brewing water can be released, dissolved into the water, after drinking may act on the nervous system, resulting in nausea, dizziness, nerve paralysis and other abnormalities, and in severe cases, anaphylactic shock can also occur. Therefore, it is not recommended to use fresh ginkgo biloba to drink, try to buy concocted ginkgo biloba, which has some medicinal value. In addition, for hypertensive patients should strictly follow the doctor’s instructions to take antihypertensive drugs, not to use private prescriptions or blindly buy drugs to use, in order to avoid adverse reactions.