Ginkgo Biloba: Benefits, Uses, Dosage & Side Effects
The ginkgo tree is one of the oldest living tree species on Earth, surviving unchanged for over 200 million years. Its leaves have been used in Traditional Chinese Medicine for millennia — and today ginkgo biloba extract is one of the world’s most widely taken herbal supplements, particularly for memory and brain health.
What is ginkgo biloba?
Ginkgo biloba is extracted from the leaves of the maidenhair tree. Its active compounds — flavonoids and terpenoids (ginkgolides and bilobalide) — are thought to work primarily by improving blood circulation to the brain, protecting neurons from oxidative stress, and supporting neurotransmitter function.
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Memory and cognitive function
Ginkgo is one of the most extensively studied herbs for memory. For related approaches, see our guides to improving memory naturally and natural remedies for focus.
Circulation and brain blood flow
Ginkgo’s most consistent mechanism is supporting blood circulation, including cerebral blood flow. This underlies most of its cognitive and vascular benefits.
Antioxidant protection
Its flavonoids are potent antioxidants that protect brain cells from oxidative damage — relevant to healthy ageing and long-term cognitive health.
Anxiety and mood
Some people use ginkgo for anxiety and mood alongside other herbs. See our guide to natural remedies for anxiety.
How to take ginkgo biloba
- Use standardised leaf extract (typically 24% flavonol glycosides, 6% terpene lactones). Never use raw ginkgo seeds — they are toxic.
- Dose: 120–240 mg daily in divided doses is the range most used in research. Start lower and follow product guidance.
- Timing: Takes 4–8 weeks of daily use to assess effect.
Important cautions
- Blood thinners: Ginkgo can increase bleeding risk. Do not combine with warfarin, aspirin or clopidogrel without medical supervision.
- Avoid before surgery.
- Check with a doctor if you have epilepsy or take antidepressants.
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Take the free quiz →Pairing ginkgo with other herbs
Ginkgo is often paired with Lion's Mane (neuroplasticity), ginseng (energy and stamina) or brahmi (memory and calm). For a broader toolkit, see our adaptogens guide.
Frequently asked questions
What is ginkgo biloba good for?
Memory, cognitive function, circulation and brain health. It has one of the longest histories of any botanical in Traditional Chinese Medicine, used for mental clarity and concentration.
Does ginkgo biloba improve memory?
Ginkgo is one of the most studied herbs for memory. Evidence is mixed but many find it helpful for mental clarity, especially when fatigue or poor circulation is a factor.
How long does ginkgo biloba take to work?
4 to 8 weeks of consistent daily use before noticeable effects on memory and focus typically emerge. It works gradually rather than immediately.
Who should not take ginkgo biloba?
People on blood-thinning medications should not take ginkgo without medical supervision. Avoid before surgery. Check with a doctor if you have epilepsy or take antidepressants. Never eat raw ginkgo seeds.
What is the dose of ginkgo biloba?
120–240 mg daily of standardised extract is the range most used in research. Follow product guidance. Always use standardised leaf extract.
References & further reading
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