Holistic Health The Health Benefits of Ginkgo Biloba Can Ginkgo Biloba Boost Your Brain Health? By Cathy Wong Medically reviewed by Medically reviewed by Caitilin Kelly, MD on November 22, 2019 Caitilin Kelly, MD, is a clinical physician at Indiana University Health Bloomington Hospital and is board-certified in internal medicine. Learn about our Review Board Caitilin Kelly, MD Updated on February 03, 2020 Print Table of Contents View All Table of Contents Health Benefits Possible Side Effects Dosage and Preparation What to Look For Ginkgo biloba is an antioxidant-rich herb used to enhance brain health and treat a variety of conditions. Although dietary supplements typically contain extracts of the plant's leaves, ginkgo biloba seeds are commonly used for healing purposes in traditional Chinese medicine. Ginkgo contains numerous flavonoids, compounds which proponents suggest can protect against aging-related issues such as dementia by improving blood flow to the brain, among other benefits. Health Benefits Ginkgo biloba is said to aid in the treatment or prevention of the following health problems: Age-related macular degeneration Alzheimer's disease Anxiety Asthma Bronchitis Depression Erectile dysfunction Fatigue Glaucoma High blood pressure Insulin resistance Multiple sclerosis Peripheral artery disease Sexual dysfunction in women Tinnitus In addition, ginkgo biloba is said to preserve memory, as well as promote recovery from stroke. Scientific studies support some, but not all ginkgo benefits. Here's a look at the science behind the potential health benefits of ginkgo biloba: Brain Health So far, studies testing ginkgo biloba's effects against aging-related declines in brain health have yielded mixed results. A review of studies using the standardized Ginkgo biloba extract EGb 761 found the supplement to be more effective than placebo in most cases of Alzheimer's disease, and vascular or mixed dementia. The review was unable to identify a consistent benefit for using Ginkgo biloba in the treatment of neuropsychiatric conditions. Eye Health Ginkgo biloba shows promise in the treatment of glaucoma and other eye diseases. Ginkgo biloba contains natural properties that act as antioxidants and improve blood flow. This effect has been shown to reduce retinal degeneration. There's also evidence of Ginkgo biloba producing color vision improvements for patients with diabetic retinopathy. Blood Pressure It's too soon to tell whether ginkgo biloba can help treat high blood pressure, according to a research review published in Phytomedicine in 2014. Although six of the nine reviewed clinical trials found that gingko biloba may help reduce blood pressure, the herb did not appear to have significant effects on blood pressure in the other three trials. Since most of the reviewed studies were considerably flawed, the review's authors state that more rigorous research is needed before ginkgo biloba can be recommended for blood pressure control. Possible Side Effects Verywell / Jessica Olah Ginkgo biloba may trigger the following side effects: allergic skin reactions, diarrhea, digestive problems, dizziness, headaches, muscle weakness, and nausea. Since ginkgo biloba may affect blood clotting, it shouldn't be used by people with bleeding disorders or those who are taking medication or supplements that affect blood clotting, such as warfarin, aspirin, garlic, vitamin E and nonsteroidal anti-inflammatory drugs (NSAIDs). Some cases of bleeding have occurred in individuals who were not on another blood thinner. Individuals with epilepsy or diabetes should also avoid use of ginkgo biloba, unless the herb is taken under the supervision of a medical professional. Pregnant women shouldn't take ginkgo. Given the number of medications and supplements that may interact with ginkgo, it's a good idea to consult your primary care provider before taking ginkgo. Ginkgo contains a compound called ginkgotoxin. Although ginkgotoxin is found in the largest amounts in ginkgo nuts, it's also present in small quantities in the leaves. Structurally similar to vitamin B6, it has been found to block vitamin B6 activity. According to one case report, a woman developed generalized tonic-clonic seizure after eating large amounts of ginkgo nuts and had lowered blood vitamin B6 levels. After treatment, which included vitamin B6 medication, her symptoms resolved and no seizures recurred. Why Is Vitamin B6 a Healthy Nutrient for You? Dosage and Preparation There is no established standard dose for gingko biloba. Different formulations and doses have been used in research studies investigating the herb's effect on various conditions. The right dose for you may depend on several factors, including your age, gender, medical history, and formulation used. As always, speak with your healthcare provider to get personalized advice regarding the right dose for you. What to Look For Gingko is known by many other names, including bai guo ye, yinhsing, and fossil tree. But the supplement is most popularly known as gingko biloba and you will most likely see it on store shelves labeled as such. Many health food markets and vitamin shops sell this product. To make sure that you get the proper dose, the National Institutes of Health (NIH) recommends that you look for a Supplement Facts label on the product that you buy. This label will contain vital information including the amount of active ingredients per serving. You can also find out if other ingredients have been added to the product such as fillers, binders, and flavorings. Lastly, the organization suggests that you look for a product that contains a seal of approval from a third-party organization that provides quality testing. These organizations include U.S. Pharmacopeia, ConsumerLab.com, and NSF International. A seal of approval from one of these organizations does not guarantee the product's safety or effectiveness but it does provide assurance that the product was properly manufactured, contains the ingredients listed on the label, and does not contain harmful levels of contaminants. How Can Vitamins Relieve Stress? Was this page helpful? Thanks for your feedback! Learn the best ways to manage stress and negativity in your life. Sign Up You're in! Thank you, {{form.email}}, for signing up. There was an error. Please try again. What are your concerns? Other Inaccurate Hard to Understand Submit Article Sources Verywell Mind uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Mei N, Guo X, Ren Z, Kobayashi D, Wada K, Guo L. Review of ginkgo biloba-induced toxicity, from experimental studies to human case reports. J Environ Sci Health C Environ Carcinog Ecotoxicol Rev. 2017;35(1):1-28. doi:10.1080/10590501.2016.1278298 Xiong XJ, Liu W, Yang XC, et al. Ginkgo biloba extract for essential hypertension: a systemic review. Phytomedicine. 2014;21(10):1131-6. doi:10.1016/j.phymed.2014.04.024 Weinmann S, Roll S, Schwarzbach C, Vauth C, Willich SN. Effects of ginkgo biloba in dementia: systematic review and meta-analysis. BMC Geriatr. 2010;10:14. doi:10.1186/1471-2318-10-14 Saccà SC, Corazza P, Gandolfi S, et al. Substances of interest that support glaucoma therapy. Nutrients. 2019;11(2). doi:10.3390/nu11020239 Find Professional Counseling Online Advertiser Disclosure × The offers that appear in this table are from partnerships from which Verywell Mind receives compensation.