Ginkgo biloba may modestly improve some aspects of sexual function, but the evidence is mixed and depends heavily on the situation. The strongest results come from people whose low libido is a side effect of antidepressant medication. For the general population, the picture is far less clear.
How Ginkgo Affects Sexual Function
Ginkgo’s potential sexual benefits come down to blood flow. The extract relaxes smooth muscle cells, affects the body’s nitric oxide system, and inhibits a compound called platelet-activating factor. Together, these actions increase circulation to the genitals, which plays a direct role in both arousal and erectile function. In women, ginkgo also appears to act as a mild phytoestrogen, further supporting the blood flow mechanisms involved in sexual response.
Animal research has revealed another possible pathway. In male rats, ginkgo extract significantly increased dopamine levels in brain areas that regulate sexual behavior and lowered prolactin, a hormone that can suppress libido when elevated. Higher dopamine and lower prolactin is a combination strongly associated with increased sexual motivation. Whether this translates cleanly to humans remains an open question.
One thing ginkgo does not appear to do is change your hormone levels. A pilot study giving healthy volunteers 240 mg per day for 14 days found no significant changes in testosterone, free testosterone, dihydrotestosterone, or any other major circulating sex hormone. So if ginkgo does boost libido, it’s not working through testosterone.
The Antidepressant Connection
The most cited evidence for ginkgo and libido comes from a 1998 open trial of 63 patients experiencing sexual side effects from antidepressants, primarily SSRIs. In that study, ginkgo was reported as 84% effective at alleviating sexual dysfunction across all four phases of the sexual response cycle: desire, arousal, orgasm, and the sense of satisfaction afterward. Women responded at a higher rate than men, with 91% of women showing improvement compared to 76% of men. The average dose was about 207 mg per day, titrated up from lower starting doses.
These numbers sound impressive, but there’s an important caveat. This was an open trial, meaning there was no placebo group and neither the patients nor the researchers were blinded. The placebo effect is notoriously powerful in sexual function research, so the real effect size could be considerably smaller. No large, placebo-controlled trial has replicated these results with the same strength, which is why the finding remains promising but unconfirmed.
Results in Women Without Antidepressants
A more rigorous placebo-controlled study tested ginkgo in 99 women with sexual dysfunction who were not on antidepressants. The results were more complex. A single 300 mg dose produced a small but statistically significant increase in physical arousal (measured by genital blood flow) compared to placebo. However, the women themselves didn’t report feeling more aroused. Their bodies responded slightly more, but the subjective experience of desire didn’t change.
Over the longer term, ginkgo alone didn’t outperform placebo for either physical arousal or subjective desire. The one exception was when ginkgo was combined with sex therapy: women in that group reported significantly greater sexual desire at the end of treatment compared to placebo. But ginkgo by itself, without the therapy component, showed no meaningful improvement in desire scores. This suggests ginkgo might work best as a complement to other approaches rather than as a standalone libido booster.
Results in Men
Direct evidence for ginkgo improving libido in otherwise healthy men is thin. The 1998 open trial included 30 men with antidepressant-related sexual dysfunction, and 76% reported improvement. But outside of that specific context, well-designed human trials on male libido are scarce. The rat studies showing enhanced sexual behavior at moderate doses over two to four weeks are intriguing but haven’t been confirmed in controlled human research.
Because ginkgo’s primary mechanism involves increasing blood flow, it may have more measurable effects on erectile function than on desire itself. Those are related but distinct: you can have strong desire without strong erections, or improved erections without any change in how often you want sex.
How Long Before You’d Notice Anything
The timeline varies depending on what you’re hoping to see. A single dose of 300 mg can produce a small, measurable increase in genital blood flow within hours, at least in women. But that physical change doesn’t seem to translate into a noticeable shift in desire or subjective arousal right away.
In the antidepressant trial, patients were gradually titrated up to their effective dose, and the average daily amount was around 207 mg. The study didn’t specify exact timelines for when patients noticed improvement, but doses were adjusted over the course of treatment. In rat studies, significant changes in sexual behavior appeared after 14 to 28 days of consistent dosing. If ginkgo is going to do anything meaningful for you, a reasonable expectation would be at least two to four weeks of daily use.
Safety and Side Effects
Ginkgo is generally well tolerated. The most common side effects are mild: dizziness, stomach discomfort, and headache.
The serious concern is bleeding risk. Ginkgo affects platelet function, which is part of how it increases blood flow, but that same mechanism means it can interact dangerously with blood-thinning medications. If you take anticoagulants, antiplatelet drugs like aspirin or clopidogrel, or regular NSAIDs like ibuprofen, ginkgo can increase the risk of bleeding events and disrupt normal clotting. People with bleeding disorders should avoid it entirely.
The Bottom Line on Libido
If your low libido is tied to antidepressant side effects, ginkgo has the most supportive (though not conclusive) evidence, with the original open trial reporting benefit in the majority of patients at doses around 200 mg per day. If your low desire isn’t medication-related, the evidence is weaker. Ginkgo can modestly increase physical arousal through improved blood flow, but that doesn’t reliably translate into feeling more desire. It may work better when paired with other interventions rather than used on its own. It won’t raise your testosterone or fundamentally shift your hormonal profile, so for people whose libido issues are hormonally driven, ginkgo is unlikely to be the answer.