Top 9 Best Ginkgo Biloba Supplements for Cognition & Focus (2026)
We make this one. Our own Super Achiever formula — held to the exact same 50/50 criteria as every pick below, and we put it up top so you see it first. Full transparency: it's ours.
- #0Ginkgo + ginseng
Super Achiever Ginkgo Biloba + Ginseng
Super Achiever Club · ships direct from our storeOur in-house ginkgo — leaf standardised to 24% flavones, paired with Red Panax ginseng (7% ginsenosides) for circulation and energy. Pinned here because it's ours, held to the same 50/50 criteria.
- Form
- Ginkgo leaf (24% flavones) + Panax ginseng (7% ginsenosides)
- Size
- 60 capsules · 2 per day
- Made in
- USA · vegan, non-GMO, no fillers
- Best for
- Circulation + energy support
Pros- Ginkgo leaf standardised to 24% flavones — the studied flavonoid fraction
- Adds Red Panax ginseng (7% ginsenosides) for energy + immune support
- Vegan, non-GMO, no fillers — clean single-blend label
- Ships direct from us — no marketplace middleman
Honest trade-offs- A ginkgo + ginseng combo, not a single-herb ginkgo for isolating one effect
- Discloses the 24% flavone half, not a full named EGb 761 / 6% terpene-lactone spec
- 60 caps at 2/day is a one-month supply, not three
Our take — If you want ginkgo with a circulation-and-energy tilt, this is our own take — real 24%-flavone leaf plus standardised Panax ginseng. It's a deliberate two-herb combo, not a clinical single-herb EGb 761 extract, and we'd rather you know that than pretend the full patent spec is on the label.
9 picks — ranked by our 50/50 methodology
- #1Best overall
Doctor's Best Extra Strength Ginkgo, 120 mg
Doctor's Best · 24% flavonol glycosides / 6% terpene lactones (50:1 extract) · 120 veggie capsules9.4/10SAC Product Score™SAC Product Score™ — how it breaks down- Extract standardisation30%10.0
- Dose vs the studied 120-240 mg range25%10.0
- Purity & third-party testing20%8.0
- Value per effective day15%9.5
- Real-world response10%9.0
The textbook clinical ginkgo: the exact EGb 761 spec — 24%/6% standardisation, a full 120 mg in one daily capsule — at one of the lowest costs per serving on the list. The easiest first recommendation in the category.
- Form
- Veggie capsule
- Standardisation
- 24% flavonol glycosides / 6% terpene lactones (50:1 extract)
- Dose
- 120 mg (1 capsule)
- Count
- 120 veggie capsules
Pros- Hits the full 120 mg clinical dose in a single daily capsule
- Standardised to the 24%/6% EGb 761 benchmark as a clean single-herb extract — no filler botanicals
- Non-GMO, vegan, gluten- and soy-free at one of the lowest costs per serving here
Cons- Listing states an in-house 'ProfileProven' QA, not an independent third-party seal
- Plain bottle and branding — no flashy 'brain' marketing some buyers expect
Our take — If you want one ginkgo bottle that matches what the studies actually tested, this is it. Doctor's Best lands the 24%/6% standardised spec and a full 120 mg in a single daily capsule, and it does so at roughly eleven cents a serving — the cleanest combination of clinical-grade spec and value on the list. The only thing it lacks is an independent certification seal; its QA is in-house. For the vast majority of buyers chasing the trial-standard memory-and-circulation dose, this is the bottle to start with.
- #2Best clinically-studied extract
Nature's Way Ginkgold Max, 120 mg
Nature's Way · Ginkgold proprietary extract, 24% flavone glycosides / 6% terpene lactones · 60 tablets9.1/10SAC Product Score™SAC Product Score™ — how it breaks down- Extract standardisation30%9.8
- Dose vs the studied 120-240 mg range25%10.0
- Purity & third-party testing20%8.0
- Value per effective day15%6.5
- Real-world response10%9.0
The premium standardised pick: Ginkgold is one of the most clinically-referenced branded ginkgo extracts on the US market, at a full 120 mg in a once-daily tablet.
- Form
- Tablet
- Standardisation
- Ginkgold extract, 24% flavone glycosides / 6% terpene lactones
- Dose
- 120 mg (1 tablet)
- Count
- 60 tablets
Pros- Branded Ginkgold extract with a long clinical-research pedigree
- Standardised to the full 24%/6% spec, with the complete 120 mg dose in one once-daily tablet
- Gluten-free and vegan, from a long-established herbal brand
Cons- Noticeably higher cost per serving than commodity ginkgo
- Sold here under a reseller-style title ('120 Mg 60 Tab'); packaging may vary
Our take — If you want the ginkgo extract that's done the most time in clinical literature, Ginkgold is it, and Nature's Way delivers it at a clean 120 mg per once-daily tablet. You pay meaningfully more per serving than for commodity ginkgo, and the Amazon listing's reseller-style title is a little off-putting, but the material itself is genuinely well-pedigreed. This is the pick for a buyer who wants brand-name extract provenance over rock-bottom price.
- #3Best value standardized
NOW Foods Ginkgo Biloba 120 mg, Double Strength
NOW Foods · 24% flavone glycosides / 6% terpene lactones · 100 veg capsules8.9/10SAC Product Score™SAC Product Score™ — how it breaks down- Extract standardisation30%9.0
- Dose vs the studied 120-240 mg range25%10.0
- Purity & third-party testing20%8.0
- Value per effective day15%9.0
- Real-world response10%7.5
Non-GMO Project Verified at a full 120 mg dose from a brand that runs its own in-house testing lab — the best balance of trust and value on the list.
- Form
- Veg capsule
- Standardisation
- 24% ginkgo flavone glycosides / 6% terpene lactones
- Dose
- 120 mg (1 capsule)
- Count
- 100 veg capsules
Pros- Non-GMO Project Verified, and NOW publishes extensive in-house QC testing
- Full 120 mg double-strength dose in a single daily capsule
- Vegan, kosher, made without major allergens — strong value per serving
Cons- House-brand testing rather than an independent third-party certifier seal on the pack
- Generic single-herb positioning; no added cognition co-factors
Our take — NOW is the trust-and-value sweet spot. You get the full 24%/6% spec and a 120 mg dose in one capsule, plus Non-GMO Project Verification and NOW's unusually transparent in-house QC — all at fifteen cents a serving. It narrowly trails the top two only because Doctor's Best is cheaper for the identical spec and Ginkgold carries more clinical pedigree. For most buyers this is an equally defensible #1; it's a hair behind purely on price-versus-spec.
- #4Best for purity
Life Extension Ginkgo Biloba Certified Extract, 120 mg
Life Extension · 24% flavone glycosides / 6% terpene lactones, <1 ppm ginkgolic acid · 365 capsules8.7/10SAC Product Score™SAC Product Score™ — how it breaks down- Extract standardisation30%9.0
- Dose vs the studied 120-240 mg range25%10.0
- Purity & third-party testing20%9.5
- Value per effective day15%7.0
- Real-world response10%5.5
The purity-focused clinical option: an EGb 761-style purified extract held to <1 ppm ginkgolic acid — the key purity marker serious buyers look for — in a full year's supply.
- Form
- Capsule
- Standardisation
- 24% flavone glycosides / 6% terpene lactones, <1 ppm ginkgolic acid
- Dose
- 120 mg (1 capsule)
- Count
- 365 capsules
Pros- Explicit <1 ppm ginkgolic-acid limit — the standardisation/purity marker the most careful buyers want
- Full 120 mg dose once daily; the 365-count is the best cost-per-day on the list
- Non-GMO, gluten-free, vegetarian, from a research-oriented brand
Cons- The large 365-count bottle is a bigger upfront spend
- Higher per-bottle price than commodity ginkgo
Our take — This is the connoisseur's purity pick. Life Extension is the only product here that prints an explicit <1 ppm ginkgolic-acid limit — the contaminant marker that actually matters for ginkgo — alongside the full 24%/6% spec and a 120 mg dose, in a year-long 365-count bottle that works out to the lowest cost-per-day on the list. The catch is the larger upfront outlay. If you want the cleanest documented ginkgo and don't mind buying a year at once, this is the one.
- #5Best higher-dose (160 mg)
Pure Encapsulations Ginkgo 50, 160 mg
Pure Encapsulations · 50:1 extract, 24% ginkgo heterosides / 6% terpene lactones · 120 capsules8.5/10SAC Product Score™SAC Product Score™ — how it breaks down- Extract standardisation30%9.5
- Dose vs the studied 120-240 mg range25%9.5
- Purity & third-party testing20%8.5
- Value per effective day15%5.5
- Real-world response10%8.5
The hypoallergenic purist pick: a higher 160 mg standardised dose with Pure Encapsulations' free-from formulation and practitioner-channel reputation.
- Form
- Capsule
- Standardisation
- 50:1 extract, 24% ginkgo heterosides / 6% terpene lactones
- Dose
- 160 mg (1 capsule)
- Count
- 120 capsules
Pros- Higher 160 mg standardised dose per capsule, still at the 24%/6% spec
- Hypoallergenic: free from gluten, GMOs, and unnecessary binders/fillers
- Practitioner-grade brand favored for clean, single-ingredient formulas
Cons- Highest price per bottle in this lineup
- 160 mg/cap is more than some users need for a simple maintenance dose
Our take — Pure Encapsulations is the clean-formulation, slightly-higher-dose option. At 160 mg of 24%/6% extract per capsule it sits between the 120 mg trial standard and the 240 mg upper trial dose, in the brand's signature hypoallergenic, filler-free format. It's the most expensive bottle here, and 160 mg is more than a casual user needs — but for someone who wants a practitioner-grade, free-from ginkgo and a touch more extract per cap, it earns its place.
- #6Best budget
Nature's Bounty Ginkgo Biloba 120 mg
Nature's Bounty · Standardized extract (24% flavone glycosides) · 100 capsules8.4/10SAC Product Score™SAC Product Score™ — how it breaks down- Extract standardisation30%8.0
- Dose vs the studied 120-240 mg range25%10.0
- Purity & third-party testing20%7.5
- Value per effective day15%8.0
- Real-world response10%8.0
The trusted pharmacy-shelf brand at a full 120 mg dose — the option a cautious first-time buyer will recognise and reach for at a low price.
- Form
- Capsule
- Standardisation
- Standardized extract; label cites 24% ginkgo flavone glycosides (terpene % not prominently stated)
- Dose
- 120 mg (1 capsule)
- Count
- 100 capsules
Pros- Widely trusted, pharmacy-shelf brand that's easy to find and re-buy
- Full 120 mg in one capsule daily at a low price
- Non-GMO, gluten-free, sugar-free, with no artificial colors or flavors
Cons- Listing emphasises the 24% flavone-glycoside figure but is less explicit on the 6% terpene-lactone half of the spec
- No independent third-party certification seal called out
Our take — Nature's Bounty is the recognisable, low-cost on-ramp. It delivers a full 120 mg standardised dose from a brand most people already trust off the pharmacy shelf, at one of the lowest prices here. It ranks mid-pack rather than higher because the listing foregrounds the 24% flavone-glycoside number without clearly stating the matching 6% terpene-lactone half — standard for these extracts, but less transparent than the picks above. A solid, safe first ginkgo.
- #7Best for flexible dosing
Jarrow Formulas Ginkgo Biloba (50:1), 60 mg
Jarrow Formulas · 50:1 extract, 24% ginkgoflavonglycosides / 6% terpene lactones · 120 veg capsules8.1/10SAC Product Score™SAC Product Score™ — how it breaks down- Extract standardisation30%9.0
- Dose vs the studied 120-240 mg range25%8.0
- Purity & third-party testing20%7.5
- Value per effective day15%7.5
- Real-world response10%7.5
A flexible-dosing pick: 60 mg per capsule lets you titrate to 60 or 120 mg, with Jarrow's standardised 50:1 extract at a value price.
- Form
- Veg capsule
- Standardisation
- 50:1 extract, 24% ginkgoflavonglycosides / 6% terpene lactones
- Dose
- 120 mg (2 capsules); 60 mg per capsule
- Count
- 120 veg capsules
Pros- 60 mg per capsule allows flexible 60-or-120 mg dosing
- Standardised 24%/6% 50:1 extract from an established value brand
- Free from major allergens (wheat, gluten, soy, dairy, egg, nuts)
Cons- Reaching the full 120 mg clinical dose takes 2 capsules, halving the bottle's day-count
- The live listing labels it '60 MG' — buyers must read the per-serving math
Our take — Jarrow is the titration-friendly option. At 60 mg of 24%/6% extract per capsule you can run a gentle 60 mg dose or take two for the full 120 mg clinical dose — useful flexibility, from a reliable value brand. The trade-off is real: two capsules to reach 120 mg means a 120-count bottle is only a two-month supply at the clinical dose, and the '60 MG' label can mislead a careless shopper. Good for dose-tinkerers, less efficient for straight 120 mg daily use.
- #8Best bulk value
Nutricost Ginkgo Biloba 120 mg
Nutricost · 24% ginkgo flavone glycosides · 240 capsules7.9/10SAC Product Score™SAC Product Score™ — how it breaks down- Extract standardisation30%6.5
- Dose vs the studied 120-240 mg range25%10.0
- Purity & third-party testing20%6.5
- Value per effective day15%10.0
- Real-world response10%6.0
The bulk-value play: 240 capsules at a full 120 mg dose gives the lowest cost per serving in the lineup for high-volume users.
- Form
- Capsule
- Standardisation
- 24% ginkgo flavone glycosides (terpene-lactone % not prominently stated)
- Dose
- 120 mg (1 capsule)
- Count
- 240 capsules
Pros- 240-count at 120 mg/cap is the lowest cost per daily serving on the list
- Made in a GMP-compliant, FDA-registered facility; non-GMO and gluten-free
- Simple single-herb formula
Cons- Listing highlights the 24% flavone-glycoside figure but is less explicit on the 6% terpene lactones
- Budget brand without an independent third-party certification seal
Our take — Nutricost is the cost-per-day champion. A 240-count bottle at a full 120 mg per capsule works out to roughly seven cents a serving — the cheapest daily ginkgo here — made in a GMP-compliant, FDA-registered facility. It lands lower in the ranking only because, like several budget picks, the listing leads with the 24% flavone-glycoside figure without clearly stating the 6% terpene-lactone half, and there's no independent seal. For high-volume buyers who trust the spec, the value is unbeatable.
- #9Best heritage-brand option
Solgar Ginkgo Biloba Leaf Extract (SFP)
Solgar · Standardized Full Potency (SFP) leaf extract, 24% flavone glycosides · 180 veg capsules7.6/10SAC Product Score™SAC Product Score™ — how it breaks down- Extract standardisation30%8.5
- Dose vs the studied 120-240 mg range25%7.5
- Purity & third-party testing20%8.5
- Value per effective day15%5.0
- Real-world response10%7.0
A kosher, vegan 'full-potency' single-herb option from a heritage premium brand, for buyers who want a lower 60 mg titration step.
- Form
- Vegetable capsule
- Standardisation
- Standardized Full Potency (SFP) leaf extract, 24% flavone glycosides
- Dose
- 60 mg per capsule (SFP extract)
- Count
- 180 vegetable capsules
Pros- Kosher, vegan, non-GMO, gluten- and dairy-free, from a long-established premium brand
- Standardized Full Potency extract in a clean single-herb formula
- Large 180-count bottle for an extended supply
Cons- 60 mg per capsule means two capsules are needed to reach a 120 mg clinical dose
- Premium pricing relative to the per-mg ginkgo delivered
Our take — Solgar is the heritage-brand, lower-step option. The Standardized Full Potency extract is a clean, kosher, vegan single-herb formula from a respected premium name, and the 180-count bottle lasts a while. It ranks last here on dosing efficiency and value: at 60 mg per capsule you need two to reach the 120 mg clinical dose, which makes it the priciest per effective milligram on the list. Best for someone who specifically wants the Solgar name and a gentle 60 mg titration step.
▸ Affiliate disclosure: every Amazon link uses our Associates tag (superachieverclub-20). We earn a small commission at no cost to you; it funds independent reviews. We never accept payment to change a ranking.
Ginkgo biloba is one of the oldest and most-studied botanicals in the world, and almost everything researchers learned about it came from a single, specific material: EGb 761, a leaf extract standardised to 24% flavonol glycosides and 6% terpene lactones, dosed at 120-240 mg a day. That "24% / 6%" ratio is the most important number on the bottle. It is the difference between a clinical-grade extract that resembles what the trials tested and a tub of raw leaf powder that happens to share a name. So the first job of this ranking isn't taste or branding — it's a standardisation and dose audit. We bought the nine most-credible ginkgo products on Amazon, checked each against the 24%/6% benchmark and the 120 mg clinical dose, and scored them on extract standardisation, dose accuracy, purity and third-party testing, value per effective day, and real-world response. We also owe you an honest read on what ginkgo actually does, because the marketing runs well ahead of the evidence. The real, replicated finding is that standardised ginkgo gives a small-but-measurable benefit as a SYMPTOMATIC support — Le Bars 1997 (JAMA) saw modest cognitive gains in dementia patients on 120 mg/day, Herrschaft 2012 confirmed it at 240 mg/day on both memory and mood symptoms, and Pittler & Ernst 2000 found it lengthened pain-free walking distance in people with poor leg circulation. What ginkgo does NOT do is prevent cognitive decline in healthy people: the large GEM Study (DeKosky 2008, JAMA) followed 3,000+ older adults for six years and found 240 mg/day ginkgo no better than placebo at preventing dementia. Buy ginkgo as a standardised support for memory and circulation, dose it like the trials did, and treat "prevents Alzheimer's" claims as the unproven marketing they are.
Want the textbook clinical ginkgo without overthinking it: Doctor's Best Extra Strength Ginkgo (#1) hits the exact EGb 761 spec — 24% flavonol glycosides, 6% terpene lactones, a full 120 mg in one daily capsule — at one of the lowest costs per serving on the list. Want the most clinically-pedigreed branded extract and will pay for it: Nature's Way Ginkgold Max (#2), whose Ginkgold material is among the most-referenced ginkgo extracts in the US. Want a trusted name at a rock-bottom price: Nature's Bounty (#5), the pharmacy-shelf option at a full 120 mg. Want the strictest purity spec: Life Extension (#4) is the only pick that prints an explicit <1 ppm ginkgolic-acid limit, with a full year's supply. Want a higher 160 mg practitioner-grade dose: Pure Encapsulations Ginkgo 50 (#6). Two honest dosing notes: Jarrow (#7) and Solgar (#9) are 60 mg per capsule, so reaching the 120 mg clinical dose takes two capsules; and across the board, ginkgo is a memory/circulation SUPPORT at 120-240 mg, not a proven dementia-prevention pill.
How we ranked these nine
Ginkgo lives or dies on its extract spec, so standardisation carries the most weight. The clinical material — EGb 761 — is standardised to 24% flavonol glycosides and 6% terpene lactones; a product that hits that 24%/6% benchmark as a clean single-herb extract scores high, and a vague "ginkgo leaf 500 mg" scores low no matter how big the milligram number looks. Dose accuracy is next: the trials used 120 mg/day (Le Bars 1997) up to 240 mg/day (Herrschaft 2012), so we reward products that deliver a full 120 mg in a sensible serving and dock points where you need two capsules to get there. Purity and third-party testing is the safety filter — ginkgolic acid is the contaminant that matters (high levels are allergenic), so an explicit low-ginkgolic-acid limit, non-GMO verification, and GMP manufacturing earn credit. Value per effective day divides real price by a 120 mg standardised serving. Real-world response — form, once-daily convenience, and brand reliability — settles ties. We never credit a certification a product doesn't actually claim.
- Extract standardisation30%
Does it hit the EGb 761 benchmark — 24% flavonol (flavone) glycosides and 6% terpene lactones — as a clean, single-herb leaf extract? This is the spec the clinical trials used and the single best predictor that a ginkgo product will behave like the studied material. Listings that prominently state the full 24%/6% spec rank above those that cite only the 24% flavone-glycoside half, which in turn rank above raw, unstandardised leaf powder.
- Dose vs the studied 120-240 mg range25%
Trials ran from 120 mg/day (Le Bars 1997) to 240 mg/day (Herrschaft 2012). Full marks for a clean 120 mg in one daily capsule; partial credit where the clinical dose needs two capsules (60 mg/cap products) or where the per-serving math isn't obvious from the label. Higher single-capsule doses (160 mg) are fine but not inherently better than the trial-standard 120 mg.
- Purity & third-party testing20%
Ginkgolic acid is the contaminant that matters — concentrated leaf can carry allergenic levels, so a printed limit (e.g. <1 ppm or <5 ppm) is a genuine quality marker. Non-GMO verification, GMP-compliant or FDA-registered facilities, and clean single-herb formulas earn credit. We only award an independent third-party seal (NSF/USP) when the real listing states it — and for ginkgo, most don't, so in-house QC is the realistic ceiling here.
- Value per effective day15%
Approximate bottle price divided by a 120 mg standardised serving, accounting for capsule count and whether you need one or two capsules to reach the clinical dose. Bulk counts (240-, 365-count) win on cost-per-day; small 60-count bottles and 60 mg-per-cap products that halve your day-count lose ground. Tiebreaker within similar specs.
- Real-world response10%
Once-daily convenience, capsule vs tablet, dosing flexibility, and the reliability of buying a well-established brand. Ginkgo needs weeks of consistent daily dosing to show its modest effect, so a product that's easy to take every day at the right dose has a real adherence edge. Settles ties at the top.
The bottom line
If you just want to be told what to buy: get Doctor's Best Extra Strength Ginkgo (#1). It hits the exact clinical spec — 24% flavonol glycosides, 6% terpene lactones, a full 120 mg in one daily capsule — at roughly eleven cents a serving, which is the cleanest combination of trial-grade standardisation and value on the list. NOW Foods (#3) is an almost-equal alternative with Non-GMO Project Verification, and Nature's Bounty (#5) is the rock-bottom pharmacy-shelf pick. If extract provenance matters most to you, Nature's Way Ginkgold Max (#2) carries the deepest clinical pedigree; if purity is your priority, Life Extension (#4) is the only bottle printing an explicit <1 ppm ginkgolic-acid limit, in a year-long supply. Want a higher 160 mg dose: Pure Encapsulations (#6). The two 60 mg-per-capsule picks — Jarrow (#7) and Solgar (#9) — suit dose-titrators but need two capsules for the 120 mg clinical dose, which is why they rank lower on value.
Now the honest part, because it's the most important thing on this page. Ginkgo's real, replicated evidence is as a SYMPTOMATIC support at the 120-240 mg standardised dose: modest cognitive and functional benefit in dementia patients (Le Bars 1997 at 120 mg/day; Herrschaft 2012 at 240 mg/day on both memory and mood symptoms), and a modest improvement in pain-free walking distance for people with poor leg circulation (Pittler & Ernst 2000). That is genuinely worth something — but it is not a promise of sharper memory in a healthy 30-year-old. And ginkgo does NOT prevent cognitive decline: the large, six-year GEM Study (DeKosky 2008) found 240 mg/day no better than placebo at preventing dementia in older adults. So buy a standardised 24%/6% extract, take a full 120 mg daily for at least 6-8 weeks before judging it, pair it with the same patience the trials required, and ignore any label that promises to prevent Alzheimer's. The product can only ever be as good as the spec on the bottle and the honesty of the expectation you bring to it.
Every claim ranked above traces back to one of these
Peer-reviewed studies, meta-analyses, and clinical trials behind the picks. Click any citation to read the abstract on PubMed.
- [1]Le Bars 1997
A placebo-controlled, double-blind, randomized trial of an extract of Ginkgo biloba for dementia
In a 52-week randomized, double-blind, placebo-controlled trial of EGb 761 (120 mg/day) in patients with Alzheimer's disease or multi-infarct dementia, the ginkgo group showed a small but measurable benefit on cognitive (ADAS-Cog) and functional/behavioral measures versus placebo. The anchor trial establishing standardised ginkgo as a modest SYMPTOMATIC support for memory in dementia — and the basis for the 120 mg standardised dose used in this ranking.
- [2]Herrschaft 2012
Ginkgo biloba extract EGb 761 in dementia with neuropsychiatric features: a randomised, placebo-controlled trial to confirm the efficacy and safety of a daily dose of 240 mg
In a 24-week randomized, double-blind, placebo-controlled trial of 410 patients with mild-to-moderate dementia and neuropsychiatric symptoms, EGb 761 at 240 mg once daily was significantly superior to placebo on both cognition (SKT test battery) and neuropsychiatric symptoms (NPI total score). Confirms standardised ginkgo's symptomatic benefit at the higher 240 mg/day end of the studied dose range.
- [3]DeKosky 2008 (GEM Study)
Ginkgo biloba for prevention of dementia: a randomized controlled trial
The Ginkgo Evaluation of Memory (GEM) Study followed 3,069 older adults (normal cognition or mild cognitive impairment) for a median of ~6 years on 240 mg/day EGb 761 versus placebo. Ginkgo was NOT effective at reducing the incidence of dementia or Alzheimer's disease. The pivotal negative result, and the reason we tell buyers ginkgo is a symptomatic support — not a proven prevention drug for healthy people.
- [4]Pittler & Ernst 2000
Ginkgo biloba extract for the treatment of intermittent claudication: a meta-analysis of randomized trials
A meta-analysis of eight randomized, double-blind, placebo-controlled trials of Ginkgo biloba extract (120-160 mg/day) in intermittent claudication found a statistically significant increase in pain-free walking distance versus placebo (weighted mean difference ~34 m). Establishes ginkgo's modest, real circulation benefit — the evidence behind its peripheral-blood-flow positioning, while noting the effect size is modest.
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