Is ginkgo biloba safe during perimenopause?

Ginkgo biloba is one of the most extensively studied herbal supplements in the world, with research spanning cognitive function, circulation, tinnitus, and mood. For perimenopausal women interested in supporting memory, brain fog, or circulation, ginkgo has some theoretical and modest clinical relevance. However, its blood-thinning properties create meaningful drug interactions that require careful attention.

What might ginkgo do during perimenopause?

Ginkgo's primary mechanisms involve improved microvascular circulation (blood flow to the brain and extremities) and antioxidant effects that protect nerve tissue. The cognitive effects are most relevant during perimenopause, when memory and concentration difficulties are common. A large clinical trial (the GEM study) found ginkgo did not significantly reduce dementia incidence or cognitive decline in older adults over the long term. However, smaller studies have found modest improvements in working memory and processing speed in middle-aged adults, which may be more relevant to perimenopausal brain fog than dementia prevention.

For tinnitus, ginkgo is frequently recommended despite evidence that is inconsistent. Some studies find modest benefit; others do not. Its circulation-enhancing effects provide a biological rationale for inner ear applications.

Blood-thinning interactions

Ginkgo inhibits platelet aggregation and has anticoagulant properties. This is its most clinically significant interaction:

Warfarin and other anticoagulants: Ginkgo can increase the anticoagulant effect, raising the risk of bleeding complications. INR monitoring would need to be adjusted.

NSAIDs and aspirin: The antiplatelet effects are additive. Combined use increases bleeding risk, including risk of gastrointestinal bleeding.

SSRIs: There are rare case reports of increased bleeding risk when ginkgo is combined with SSRIs, though evidence is limited.

Ginkgo should be discontinued at least 2 weeks before surgery or dental procedures.

Other considerations

Headache, gastrointestinal upset, and dizziness are the most common side effects. Ginkgo leaf preparations (not ginkgo seeds, which are toxic) in standardized extract form (typically 24% flavone glycosides, 6% terpene lactones) are used in research. Studies have typically used 120 to 240 mg of standardized extract daily in divided doses.

Ginkgo may also have mild MAO inhibitory activity, though this is weaker than pharmaceutical MAOIs. Caution alongside antidepressants with MAO-related mechanisms is reasonable.

Ginkgo, estrogen, and brain health

Estrogen plays a significant neuroprotective role throughout a woman's reproductive years. One of estrogen's functions is supporting cerebral blood flow and maintaining neurotransmitter systems in the brain. As estrogen declines during perimenopause, these neuroprotective functions weaken, which is part of the reason why memory lapses and concentration difficulties become more common during this transition. Ginkgo's mechanism of improving microvascular circulation in the brain provides a complementary pathway to support cognitive function during this window. While ginkgo is not a substitute for estrogen's neuroprotective effects, it addresses one of the underlying mechanisms of perimenopausal cognitive changes in a way that is distinct from other supplements.

Standardization and dosing

Not all ginkgo products are equivalent. Ginkgo supplements used in clinical research are typically standardized extracts containing 24 percent flavone glycosides and 6 percent terpene lactones. Products that do not specify standardization may provide inconsistent amounts of the active compounds. The research-supported dose is 120 to 240 mg of standardized extract daily, typically divided into two doses. Lower-dose products or non-standardized preparations are unlikely to produce the effects seen in trials.

Tracking your symptoms over time using an app like PeriPlan can help you assess whether brain fog, memory lapses, or tinnitus episodes change during a 6 to 8 week ginkgo trial.

When to talk to your doctor

Discuss ginkgo with your doctor if you take any anticoagulant or antiplatelet medication, including warfarin, aspirin, clopidogrel, or fish oil; if you take an SSRI or SNRI antidepressant; or if you are preparing for surgery. Also discuss it if you have a seizure disorder, as there are rare reports of ginkgo reducing seizure threshold.

This content is for informational purposes only and does not replace medical advice. Always consult your healthcare provider about your specific situation.