Ginkgo Biloba: Benefits, Side Effects and Dosage Guide

Many wellness practices look to the past to find inspiration for modern life. Among the most popular botanical supplements today is Ginkgo biloba, an ancient plant extract that has captured the attention of researchers and wellness enthusiasts alike. Often associated with mental clarity and physical vitality, this traditional botanical is widely used to support daily wellbeing in our increasingly demanding world.

What is it? / How it works

Ginkgo biloba, often referred to simply as ginkgo or the maidenhair tree, is one of the oldest living tree species on Earth. Native to China, individual trees can live for over one thousand years, and the species itself has survived virtually unchanged for millions of years. This remarkable resilience has earned it a revered place in traditional herbal systems, where its leaves and seeds have been utilised for centuries to promote general vitality.

Today, modern supplements are typically made from a standardised extract of the green leaves. This extract is rich in bioactive compounds, most notably flavonoids and terpenoids. Researchers suggest these natural chemicals act as powerful antioxidants within the body, helping to neutralise unstable molecules that can cause cellular damage.

At a physiological level, ginkgo is thought to influence how blood moves through our blood vessels. By encouraging the natural dilation of blood vessels, it may support healthy circulation throughout the body, particularly to the brain and extremities. This improved flow of oxygen and nutrients is believed to be the primary mechanism behind its purported cognitive and physiological benefits.

Evidence-based benefits

• May support cognitive function: Many people turn to ginkgo to help maintain memory, focus, and mental alertness during busy days. Some clinical studies suggest that the botanical may support executive function and working memory, especially in older adults. However, results are mixed, and further high-quality trials are needed to confirm these cognitive properties in healthy young people.
• May improve peripheral circulation: By encouraging blood vessels to widen, ginkgo may help support healthy blood flow to the hands, feet, and brain. This traditional application is often explored by individuals who experience regular coldness in their extremities. However, it is important to note that ginkgo is not a replacement for medical treatments aimed at chronic cardiovascular conditions.
• Provides rich antioxidant defence: The high concentration of flavonoids and terpenoids in ginkgo leaves provides robust antioxidant support. These compounds help protect healthy cells from the oxidative stress caused by environmental factors like pollution and UV light. Nevertheless, laboratory findings do not always translate directly to noticeable health changes in daily human life.
• May help manage everyday anxiety: Some clinical trials have indicated that taking a standardised ginkgo extract might support emotional balance and help manage mild feelings of anxiety. This is thought to be linked to its potential adaptogenic qualities and support for healthy circulation. Despite these positive observations, ginkgo should never replace prescribed mental health treatments or professional therapeutic guidance.
• May support eye health: Some early research suggests that improved blood flow from ginkgo may benefit eye tissues, potentially supporting long-term vision health. This is particularly relevant as our eyes are highly sensitive to microscopic changes in circulation. However, current evidence remains preliminary, and larger, long-term studies are required to make definitive conclusions.

How to take it / typical dose

When choosing a ginkgo supplement, it is best to look for a standardised leaf extract, often labelled as EGb 761, which guarantees a consistent concentration of active compounds. A typical preventative or supportive daily dose ranges between 120 mg and 240 mg, often divided into two or three smaller doses taken throughout the day. Taking ginkgo alongside a meal containing some healthy fats may help with absorption, and consistency over several weeks is key, as the benefits of botanicals often take time to accumulate.

Safety and who should avoid it

While generally well tolerated by most adults, ginkgo is not suitable for everyone. Because it can naturally thin the blood, individuals taking antiplatelet or anticoagulant medications, such as warfarin or aspirin, must avoid ginkgo to prevent an increased risk of bleeding. For the same reason, anyone scheduled for surgery should stop taking ginkgo at least two weeks before their procedure. It is also not recommended for pregnant or breastfeeding women, or individuals with a history of epilepsy, as some preparations may lower the seizure threshold. Always consult a healthcare professional before starting any new herbal supplement.

The bottom line

Ginkgo biloba remains one of the most thoroughly researched botanicals, offering a bridge between ancient tradition and modern science. While it may support healthy circulation and cognitive focus, it is best viewed as one element of a holistic lifestyle that includes a balanced diet, regular exercise, and mindfulness.