Ginkgo Benefits: What the Evidence Really Shows

The most cited ginkgo benefits — memory, concentration and circulation — have real but limited scientific support: the most consistent evidence comes from trials using standardised extracts in people with cognitive decline or dementia, not in healthy adults. In a meta-analysis of 9 randomised trials with 2,561 patients with cognitive decline or dementia, the extract EGb 761 showed modest improvements in cognition and activities of daily living compared with placebo, especially at a dose of 240 mg per day ¹. In a more recent Cochrane review, the conclusion is more cautious: the benefits are small and the certainty of the evidence is limited ².

In other words: "it may modestly help some people" is honest; "it improves memory" is an exaggeration. And there are no authorised health claims in the European Union for ginkgo as a botanical — claims for botanicals remain under assessment and have not been approved ³.

What is ginkgo and what is it thought to do in the body

Ginkgo biloba is an ancient tree whose extracts have been used for centuries. Standardised extracts — the most studied is EGb 761 — concentrate flavonoids and terpenoids, and experimental research suggests two mechanisms: an antioxidant and neuroprotective effect, and improved blood flow ⁴.

It is important to distinguish what is a plausible mechanism from what is a demonstrated effect. Biological plausibility exists ⁴, but that does not guarantee it translates into noticeable benefits. If you want to understand this part better, we have a dedicated article on how ginkgo works.

Does ginkgo really improve memory and concentration?

It depends on who takes it. The strongest evidence does not come from healthy people, but from populations with cognitive complaints or a diagnosis of dementia.

• Cognitive decline and dementia: in a meta-analysis of 9 trials with 2,561 patients, EGb 761 outperformed placebo in cognition, daily activities and global clinical impression, with the effects mainly associated with the 240 mg/day dose ¹. Another meta-analysis of 7 trials with 2,684 outpatients, treated for 22–26 weeks with 120 mg or 240 mg/day, found significant differences in favour of the extract in cognition, daily activities and global assessment ⁵.
• Dementia (older review): in a meta-analysis of 9 trials with 2,372 patients and durations of 12 to 52 weeks, cognition favoured ginkgo, but daily activities did not reach statistical significance and heterogeneity between studies was high ⁶.
• Healthy adults: in a randomised, double-blind, placebo-controlled trial with 66 healthy volunteers aged 50 to 65, without age-associated cognitive decline, there were differences in favour of EGb 761 only in self-rated mental health and quality of life, with no differences in objective tests of mental function ⁷.

In plain terms: in people with complaints or disease, the effect exists but is modest; in healthy adults, objective tests show no clear gains. If you are 30 with normal memory, do not expect miracles.

What about circulation? What the studies show

Here the evidence is harder to interpret, because much of the research was carried out in a disease context and with formulations that do not correspond to a common oral supplement.

In a network meta-analysis of 98 studies with 9,513 patients with unstable angina, different ginkgo extract preparations were compared alongside conventional treatment ⁸. In another meta-analysis of 12 trials with 1,466 patients with acute ischaemic stroke, ginkgo was associated with improved neurological function and daily activities, but the effect was greater with injectable formulations ⁹. In a randomised clinical trial with 3,448 patients with acute ischaemic stroke, a specific intravenous formulation was tested (ginkgo diterpene lactones), not an oral supplement ¹⁰.

These studies should not be read as proof that a ginkgo gummy improves circulation in a healthy person: they are populations with cardiovascular disease and, in several cases, administration routes different from oral. For a broader view of the topic, see the ginkgo ingredient page.

Ginkgo for tinnitus (ringing in the ears): what Cochrane says

This is one of the popular uses with the clearest — and negative — answer. A 2022 Cochrane review assessed the effects of ginkgo in adults and children with tinnitus ¹¹. An earlier Cochrane review, from 2013, assessed ginkgo for tinnitus and noted the strong placebo effect in this condition ¹². A general clinical review on tinnitus also included ginkgo among the interventions assessed ¹³.

If you suffer from persistent ringing in the ears, ginkgo is not the answer — and the cause should be assessed by a healthcare professional.

Who may benefit — and who probably will not

Based on the available trials, the groups studied are mainly older adults with mild cognitive decline or dementia ¹⁵. Outside these groups, the evidence is weak or non-existent.

Profile	What the evidence suggests
Adult with mild cognitive decline or dementia	Modest benefit in cognition and daily activities in trials of 22–26 weeks, especially with 240 mg/day of standardised extract 15
Healthy adult aged 50–65 without complaints	No differences in objective tests of mental function; only subjective self-assessment favoured the extract 7
Healthy young adult	No evidence of benefit; this was not the population of the main trials
Person with tinnitus	No evidence of benefit in Cochrane reviews 1112
Children and adolescents	Insufficient data in trials; the product is not intended for children

For those without complaints, ginkgo is not a vaccine against cognitive ageing. Sleep, exercise and a balanced diet have much more consistent data.

Doses used in studies and what a product label says

In trials with standardised extracts, the doses studied were typically 120 mg or 240 mg per day ⁵¹. This is not a dosing instruction — it is what was tested in a clinical context, in specific populations and under supervision.

If we compare with a product from the range, the Focus and Concentration Gummies provide 120 mg of ginkgo extract per serving of 2 gummies, in a total of 60 gummies per jar. The directions on the label are to chew 2 gummies per day, preferably after a meal, without exceeding the recommended daily dose. The product's dose per serving (120 mg/day) corresponds to the lowest dose used in the trials; the most consistent benefits were observed with 240 mg/day ¹. The product combines ginkgo with other ingredients (lion's mane mushroom extract 200 mg, bacopa extract 150 mg, L-theanine 100 mg, citicoline 100 mg, vitamin B12 500 µg and vitamin B6 1.4 mg per serving).

It is worth stressing: study doses are not dosing instructions, and none of these botanical ingredients has authorised health claims in the EU ³. To explore the dose question further, see ginkgo daily dose.

Safety and interactions: what you need to know before taking it

Ginkgo is generally well tolerated in trials, but there are practical points to consider.

• Drug interactions: an interaction study in 18 healthy volunteers assessed the effect of EGb 761 (120 mg twice a day or 240 mg/day for 8 days) on the activity of several CYP enzymes and found no relevant interactions in that system ¹⁴. This does not exclude other types of interaction.
• Specific medicines: another trial in 18 healthy volunteers studied the effect of ginkgo (120 mg twice a day for 15 days) on the pharmacokinetics of raltegravir, an antiretroviral, with no serious adverse events ¹⁵.
• Anticoagulants and antiplatelets: as a precaution, anyone taking warfarin, aspirin or other anticoagulants should speak to their doctor before using ginkgo.
• Pregnancy, breastfeeding and children: not recommended; speak to a healthcare professional.

The label of the Focus and Concentration Gummies states that the product is intended for adults, should not be consumed by children, is not recommended for pregnant or breastfeeding women and that, in case of illness or medication use, a healthcare professional should be consulted before consuming. It also states that it contains polyols, whose excessive consumption may have a laxative effect. We have a more detailed article on whether ginkgo causes harm.

If you notice signs such as unusual bleeding or bruising, severe headaches or sudden changes in vision while taking ginkgo, stop and seek medical assessment. And remember: if memory loss is sudden, severe or accompanied by other symptoms, it is not ginkgo you need — it is a medical evaluation.

Gummy or tablet: what changes

There are no studies directly comparing ginkgo gummies with tablets, so it is not possible to state that one format is more effective than the other. What is known is that the format does not change the active principle itself; what changes is the dose per serving, the excipients and the convenience.

With a gummy, it is worth checking the amount of extract per serving and comparing it with the doses used in the trials ⁵. If you want to explore this comparison further, read ginkgo gummies or tablets.

How to use it with realistic expectations

If you decide to try it, give it time: in the trials, assessments were made after 22 to 26 weeks ⁵. Do not expect results in days.

Combine the supplement with what has the best support: quality sleep, regular exercise and a balanced diet. And be alert to warning signs — if memory loss is sudden, severe or accompanied by other symptoms, seek medical assessment instead of adjusting supplements.

To know when to take it during the day, see ginkgo: when to take it. And if you are looking for options for focus and energy, explore the Energy and Focus collection.

Frequently asked questions

Does ginkgo really improve memory?

In people with mild cognitive decline or dementia, trials show modest improvements in cognition compared with placebo, especially with standardised extracts of 240 mg per day. In healthy adults without complaints, objective tests of mental function showed no relevant differences.

How long does ginkgo take to work?

In clinical trials, assessments were made after 22 to 26 weeks of taking it. There is no evidence of effects within a few days, and any serious evaluation requires at least several weeks of consistent use.

Is ginkgo useful for ringing in the ears?

The Cochrane reviews on ginkgo for tinnitus assessed this use, both in the 2022 update and in the 2013 one, and a general clinical review on tinnitus also included ginkgo among the interventions assessed. If you have persistent ringing in the ears, a medical assessment to identify the cause is the most appropriate step.

Can ginkgo interact with medicines?

One study in healthy volunteers found no relevant interactions with CYP enzymes, and another showed no problems with the antiretroviral raltegravir. Even so, anyone taking anticoagulants or antiplatelets should speak to their doctor before using ginkgo, as a precaution.

Are ginkgo gummies as effective as tablets?

There are no studies directly comparing the two formats, so it is not possible to state equivalence or superiority. What matters is checking the amount of extract per serving and comparing it with the doses used in the trials.

Is ginkgo safe for children or pregnant women?

There is insufficient data on the use of ginkgo in children, pregnant or breastfeeding women, and it is not recommended in these groups. If in doubt, speak to a healthcare professional before considering any supplement.