Ginkgo Biloba
银杏 (Yín Xìng) · Ginkgo biloba
One of the oldest living tree species. Widely studied for improving blood circulation to the brain, supporting memory, and protecting against cognitive decline.
効能
主な効果
Improves blood circulation to the brain
Established mechanism — increases cerebral blood flow in clinical imaging studies
May slow cognitive decline in dementia
Large trials (GEM, GuidAge) show modest benefit for existing cognitive impairment
Reduces symptoms of peripheral artery disease
Meta-analysis shows improved walking distance in intermittent claudication
May help tinnitus and vertigo
Some positive trials though overall evidence is mixed
飲み方
安全性と相互作用
起こりうる副作用
- Headache
- Digestive upset
- Dizziness
- Allergic skin reactions (rare)
使用禁忌
- Bleeding disorders
- 2 weeks before surgery
- Seizure disorders (may lower threshold)
薬物相互作用
- Blood thinners (warfarin, aspirin, NSAIDs) — increased bleeding risk
- Anticonvulsants — may reduce effectiveness
- SSRIs — rare reports of serotonin syndrome
- Diabetes medications — may affect blood sugar
伝統的な使用法
The ginkgo tree is a living fossil — 270 million years old. In TCM, the seed (Bai Guo) is used more than the leaf. Seeds astringe the lungs, stop wheezing, and reduce vaginal discharge. The leaf extract is primarily a modern Western application developed from the 1960s onward.
現代の研究
Over 5,700 studies. The most studied herbal supplement for cognitive function. Active compounds: ginkgolides (PAF antagonists improving circulation) and bilobalide (neuroprotective). Evidence is strongest for existing cognitive impairment rather than prevention in healthy adults.
PubMedで研究を見る →Where to Buy
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