# Gingko Biloba (Ginkgo biloba)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/gingko-biloba
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-20
**Evidence Score:** 2 / 10
**Category:** Traditional Chinese Medicine
**Also Known As:** Ginkgo biloba, Maidenhair tree, Bai Guo Ye, Fossil tree, EGb 761, Gingko, Silver apricot, Living fossil

## Overview

Ginkgo biloba is a traditional Chinese medicine containing flavonoids and terpenoids that enhance cerebral blood flow and neuroprotection. Clinical studies show it significantly improves [cognitive function](/ingredients/condition/cognitive) in Alzheimer's patients and enhances daily living activities in mild dementia.

## Health Benefits

• Improves [cognitive function](/ingredients/condition/cognitive) in Alzheimer's patients (RR=1.98, 95% CI 1.52-2.59, P<0.001) [1]. • Enhances activities of daily living in mild dementia (p=0.01) [3]. • Increases clinical effectiveness when combined with donepezil in Alzheimer's (RR=1.23, 95% CI 1.13-1.34, P<0.00001) [2]. • Reduces positive symptoms in schizophrenia [6]. • Provides neuroprotection and [antioxidant](/ingredients/condition/antioxidant) benefits due to flavonoids and terpene lactones [3][6].

## Mechanism of Action

Ginkgo biloba's active compounds include flavonoid glycosides and terpenoid lactones (ginkgolides A, B, C and bilobalide) that inhibit platelet-activating factor and improve microcirculation. These compounds enhance nitric oxide production, reduce oxidative stress through [free radical scaveng](/ingredients/condition/antioxidant)ing, and modulate [neurotransmitter](/ingredients/condition/cognitive) systems including acetylcholine and [dopamine pathway](/ingredients/condition/mood)s.

## Clinical Summary

Meta-analyses demonstrate ginkgo biloba improves [cognitive function](/ingredients/condition/cognitive) in Alzheimer's patients with a relative risk of 1.98 (95% CI 1.52-2.59, P<0.001). Studies show enhanced activities of daily living in mild dementia patients (p=0.01) and increased clinical effectiveness when combined with donepezil (RR=1.23, 95% CI 1.13-1.34). Most trials used standardized extracts containing 24% flavonoid glycosides and 6% terpenoid lactones at doses of 120-240mg daily.

## Nutritional Profile

Ginkgo biloba is not a significant source of macronutrients in supplemental form (extracts). Key bioactive compounds include: Flavonoid glycosides (primarily quercetin, kaempferol, and isorhamnetin glycosides) standardized to 24% in EGb 761 extract; Terpene lactones (ginkgolides A, B, C, J and bilobalide) standardized to 6% in EGb 761 extract, with bilobalide comprising approximately 2.9% and ginkgolides approximately 3.1%; Ginkgolic acids (potentially allergenic alkylphenols, controlled to <5 ppm in pharmaceutical-grade extracts); Proanthocyanidins (~7% in standardized extracts). In whole dried leaf form: crude protein ~6-7% dry weight, crude fiber ~9-12% dry weight, crude fat ~1.5-3% dry weight, carbohydrates ~50-60% dry weight. Minerals in leaf: potassium (~9 mg/g dry weight), calcium (~8 mg/g dry weight), magnesium (~2 mg/g dry weight), iron (~0.1 mg/g dry weight), manganese (~0.07 mg/g dry weight). Ginkgo seeds (nuts) contain carbohydrates (~38g/100g), protein (~4.3g/100g), fat (~1.7g/100g), and small amounts of vitamin C (~15mg/100g) and B vitamins (thiamine ~0.22mg/100g, riboflavin ~0.09mg/100g). Bioavailability notes: Oral bioavailability of ginkgolide B is approximately 70-80%; flavonoid glycosides are hydrolyzed in the gut to aglycones before absorption, with peak plasma concentrations reached within 1.5-3 hours post-ingestion; bilobalide has a half-life of approximately 3 hours in humans. Standardized extract EGb 761 (120-240mg/day) is the most clinically studied form.

## Dosage & Preparation

Clinically studied dosages for EGb 761 extract range from 120-240 mg/day over 12-52 weeks for Alzheimer's and mild dementia. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Common side effects include headache, dizziness, gastrointestinal upset, and skin reactions in 1-2% of users. Ginkgo increases bleeding risk and should be avoided with anticoagulants like warfarin, aspirin, and clopidogrel due to platelet aggregation inhibition. Contraindicated in pregnancy and breastfeeding due to insufficient safety data. Patients should discontinue use 2 weeks before surgery due to bleeding risk.

## Scientific Research

Multiple meta-analyses of RCTs demonstrate that Ginkgo biloba extracts, particularly EGb 761, improve cognition and daily living activities in Alzheimer's and mild dementia patients. Notable studies include PMIDs 32658034, 36960422, and 26268332.

## Historical & Cultural Context

Ginkgo biloba has been used in Traditional Chinese Medicine for centuries to address [cognitive](/ingredients/condition/cognitive) impairment and dementia. Its use in TCM aligns with its modern application as a cognitive enhancer.

## Synergistic Combinations

Curcumin, Omega-3 fatty acids, Bacopa monnieri, Lion's Mane, Vitamin E

## Frequently Asked Questions

### What is the recommended dosage of ginkgo biloba for memory?

Clinical studies typically use 120-240mg daily of standardized extract containing 24% flavonoid glycosides and 6% terpenoid lactones. Most effective dosing appears to be 120mg twice daily with meals for cognitive benefits.

### How long does ginkgo biloba take to work for cognitive function?

Clinical improvements in cognitive function typically become apparent after 4-6 weeks of consistent use. Maximum benefits for memory and concentration are usually observed after 8-12 weeks of supplementation at therapeutic doses.

### Can ginkgo biloba cause bleeding problems?

Yes, ginkgo inhibits platelet aggregation and can increase bleeding risk, especially when combined with anticoagulants like warfarin or aspirin. Patients should discontinue use 2 weeks before surgery and avoid if taking blood-thinning medications.

### Is ginkgo biloba effective for dementia beyond Alzheimer's?

Studies show ginkgo improves activities of daily living in mild dementia generally, not just Alzheimer's disease. However, the strongest evidence exists for Alzheimer's patients, with less robust data for vascular dementia and other forms.

### What are the active compounds in ginkgo biloba supplements?

Standardized ginkgo extracts contain 24% flavonoid glycosides (quercetin, kaempferol, isorhamnetin) and 6% terpenoid lactones including ginkgolides A, B, C and bilobalide. These compounds provide the neuroprotective and circulation-enhancing effects.

### Is ginkgo biloba safe to take with blood thinners like warfarin or aspirin?

Ginkgo biloba may potentiate the effects of anticoagulants and antiplatelet medications due to its mild anticoagulant properties, increasing bleeding risk when combined with warfarin, aspirin, or similar drugs. If you are taking blood thinners, consult your healthcare provider before starting ginkgo biloba supplementation. Close monitoring may be necessary if concurrent use is deemed appropriate.

### Who is most likely to benefit from ginkgo biloba supplementation?

Individuals with early-stage Alzheimer's disease or mild cognitive impairment show the most robust clinical benefits from ginkgo biloba, with evidence supporting improved cognitive function and daily living activities. Older adults experiencing normal age-related memory decline may also benefit, though results are less pronounced than in diagnosed dementia populations. Those with poor circulation or tinnitus may experience secondary benefits, though evidence is more limited in these areas.

### Does the dose of ginkgo biloba need to be adjusted for older adults or those with kidney problems?

Most clinical trials use standardized doses of 120–240 mg daily without specific age-based adjustments for older adults, though individual tolerance should be monitored. Limited data exist on dosing modifications for kidney or liver impairment, making consultation with a healthcare provider especially important for those with compromised organ function. Starting with lower doses and titrating upward may be a prudent approach in elderly populations or those with comorbidities.

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