What is the recommended dosage for Ginkgo biloba?

General: 120-240 mg/day standardized to 24% flavone glycosides and 6% terpene lactones

What are the side effects of Ginkgo biloba?

Potential side effects include: Headache, Gastrointestinal upset, Dizziness, Allergic skin reactions (rare), Increased bleeding risk.

What is Ginkgo Biloba?

Ginkgo biloba is one of the most studied herbal supplements for cognitive function. Its leaf extract contains flavonoids and terpenoids that may support cerebral blood flow and have antioxidant properties. It has been widely researched for age-related cognitive concerns.

What dosage of Ginkgo Biloba has been used in studies?

Clinical trials have commonly used 120 mg to 240 mg daily of standardized extract (EGb 761), typically divided into two or three doses. This extract is standardized to 24% flavone glycosides and 6% terpene lactones. Consult your healthcare provider for dosing guidance.

What are the potential side effects of Ginkgo Biloba?

Side effects may include headache, dizziness, gastrointestinal upset, and allergic skin reactions. Ginkgo has blood-thinning properties and should not be combined with anticoagulant or antiplatelet medications without medical supervision. Discontinue use at least two weeks before surgery.

Ginkgo biloba

herb

Also known as: Maidenhair Tree, EGb 761, Ginkgo Extract

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About

Ginkgo biloba is the most extensively studied herbal supplement for cognitive function. Its flavonoid glycosides and terpene lactones enhance cerebral blood flow, provide antioxidant neuroprotection, and may modulate neurotransmitter systems. While the large GEM trial found no dementia prevention benefit, the standardized EGb 761 extract shows modest benefits for existing cognitive impairment.

How It Works

Enhances cerebral blood flow through vasodilation and blood viscosity reduction; flavonoid glycosides and terpene lactones provide antioxidant neuroprotection; may modulate acetylcholine and serotonin neurotransmitter systems.

Evidence For Conditions

Condition	Grade	Studies	Participants
Cerebrovascular Health	B	12	2000	View →
Age-Related Cognitive Decline	C	40	8000	View →

Side Effects

Headache
Gastrointestinal upset
Dizziness
Allergic skin reactions (rare)
Increased bleeding risk

Drug & Supplement Interactions

Anticoagulants and antiplatelet drugs (increased bleeding risk)
Anticonvulsants (may reduce seizure threshold)
SSRIs (serotonin syndrome risk, rare)
CYP3A4 substrates (may affect drug metabolism)

Always inform your healthcare provider about all supplements you take.

Related Ingredients

Ashwagandha Bacopa monnieri Gotu Kola Panax Ginseng Rhodiola rosea

Quick Facts

Dosage: General: 120-240 mg/day standardized to 24% flavone glycosides and 6% terpene lactones
Forms: capsule tablet liquid extract
Natural Sources: Ginkgo biloba tree leaves
Upper Limit: 600 mg/day (doses above show no additional benefit)
Best Time: With meals; may require 4-6 weeks for full effects

Evidence Summary

Cerebrovascular Health B

Age-Related Cognitive Decline C

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.