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Ginkgo Biloba Extract

herbs

Ginkgo biloba is a traditional herbal supplement derived from the leaves of the ancient ginkgo tree, used for centuries in traditional medicine. It is commonly taken to support cognitive function, memory, and cerebral blood flow, with some evidence suggesting benefits for age-related cognitive decline.

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Benefits

Enhanced memory and cognitive function
Improved blood circulation to the brain
Reduced mental fatigue
Potential support for age-related cognitive decline
Antioxidant and anti-inflammatory properties

Dosage

Typical Dose

120–240 mg daily in divided doses

Upper Limit

240 mg daily

Timing

With meals to enhance absorption

Forms & Bioavailability

Standardised Extract (24% flavone glycosides, 6% terpene lactones)

High bioavailability with standardised extracts; most research-backed form

Dried Leaf Powder

Lower bioavailability; less consistent potency than standardised extracts

Liquid Extract/Tincture

Moderate to high bioavailability; rapid absorption

Side Effects

Headache
Dizziness or vertigo
Gastrointestinal upset
Allergic reactions (particularly in sensitive individuals)
Increased bleeding risk at high doses

Interactions

Anticoagulants (warfarin, aspirin) – may increase bleeding risk
Antiplatelet medications – enhanced effect possible
Monoamine oxidase inhibitors (MAOIs) – potential interaction
Seizure medications – may reduce effectiveness

Research Summary

Ginkgo biloba has been extensively studied for cognitive benefits, with mixed but generally modest evidence supporting its use for memory and concentration in healthy individuals and those with age-related cognitive decline. Most robust evidence supports its use in specific conditions like intermittent claudication and tinnitus, whilst evidence for dementia prevention remains inconclusive. Quality and efficacy vary significantly between products, with standardised extracts showing more consistent results in clinical trials.

The Bottom Line on Ginkgo Biloba Extract

Ginkgo Biloba Extract is moderately researched with promising but sometimes mixed evidence.It is most commonly used for enhanced memory and cognitive function and improved blood circulation to the brain. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.

About Our Research

This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.

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Disclaimer: This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement, especially if you have existing health conditions or take medication.

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