Ginkgo biloba extract,
does it really help with Reduction in subjective tinnitus loudness and distress?
research showsThe claim that oral Ginkgo biloba extract reduces loudness or distress in people whose primary complaint is tinnitus is not supported. A large double-blind trial of 1,243 participants found that 150 mg/day for twelve weeks was no better than placebo, and a Cochrane review of four trials and 1,543 participants found no evidence of benefit when tinnitus was the primary complaint. A 2022 update also found uncertain benefit versus placebo with low or very low certainty, supporting F.
ads claimMarketing and selected product labels claim relief of ringing through better microcirculation. Separate research on circulation or cognition and the existence of a domestic medicine indication do not establish placebo-controlled efficacy for subjective tinnitus loudness or distress.
Useful facts when choosing a product
- Both Ginkgo medicines and Ginkgo dietary supplements are distributed in Korea. Authorized supplement functions concern memory and circulation, not proof of tinnitus treatment.
- Selected Korean medicine labels list 40 mg three times daily or 80 mg twice daily for tinnitus, but an indication and dosing instruction are not evidence-grade proof of efficacy.
- The large null trial used LI 1370 at 50 mg three times daily, totaling 150 mg/day for twelve weeks. Extract standardization and formulation vary by product.
- Ginkgo can cause headache, dizziness, and gastrointestinal symptoms and may increase bleeding risk with anticoagulants or antiplatelet drugs. Pregnancy, lactation, and use before surgery require caution.
What the research actually shows
Drew and Davies 2001 assigned 1,243 people with self-reported tinnitus to Ginkgo LI 1370 at 150 mg/day or placebo for twelve weeks and found no difference in tinnitus improvement. The 2013 Hilton Cochrane review included four trials and 1,543 participants and concluded that there was no evidence of benefit in three trials and 1,143 people with primary tinnitus. An incidental tinnitus score in 400 people with dementia started at only 1.7 to 2.5 on a ten-point scale and had unclear clinical meaning. The 2022 Sereda Cochrane review assessed twelve studies and 1,915 participants and found that Ginkgo may make little or no difference to tinnitus severity and quality of life, with low or very low certainty.
Why this is classified as F (8)
The target is loudness and distress from primary tinnitus, not memory or circulation. A direct large placebo-controlled trial was null and Cochrane reviews repeated the conclusion, supporting F with 8 points. Product authorization and safety are separated from efficacy grading.
Counterpoint. Further independent trials using a specific standardized extract and validated modern tinnitus scales could reduce uncertainty. Current direct evidence does not support patient-perceived tinnitus improvement.
Rejudgment record. New verdict — Excluded cognition and circulation evidence and prioritized a large placebo-controlled null trial and repeated Cochrane conclusions for primary tinnitus
Sub-claim grades by effect
This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.
| Effect (sub-claim) | Grade | Basis |
|---|---|---|
| Reduction in subjective tinnitus loudness | F | A large placebo-controlled trial and Cochrane synthesis found no consistent difference. |
| Improvement in tinnitus distress, severity, and quality of life | F | The latest Cochrane review found little or no difference may occur, with low or very low certainty. |
Cross-check — Codex and Claude
Evidence Table
| Study | Design | Sample | Funding | Endpoint | Result | Weight |
|---|---|---|---|---|---|---|
| Drew S, Davies E. 2001 | Large double-blind randomized placebo-controlled trial | 12 | Product supplied with private research support | Self-reported tinnitus improvement, annoyance, and loudness | LI 1370 at 50 mg three times daily was no better than placebo for tinnitus improvement. | Decisive large null evidence |
| Hilton MP et al. 2013 | Cochrane systematic review | 1,143 | Cochrane and public or academic support | Tinnitus loudness, severity, and distress | There was no evidence supporting Ginkgo efficacy in patients whose primary complaint was tinnitus. | Decisive synthesis |
| Sereda M et al. 2022 | Updated Cochrane systematic review | 1,915 | Public and academic support | Tinnitus severity, health-related quality of life, and adverse effects | Benefit versus placebo was uncertain, with possibly little or no difference in severity or quality of life and low or very low certainty. | Latest repetition |
Receipt — 4 References
All 4 cited sources were verified for existence at the original page (as of 2026-07-18).
Reviewed and approved: Chamgap Editorial Team · Approval date: 2026-07-18 · Corrections: none
Cite this verdict
[Chamgap] Ginkgo biloba extract x reduction in tinnitus loudness and distress — Evidence Grade F·8. 4 cited sources checked. Source: https://chamgap.com/en/verdicts/general/ginkgo-biloba-tinnitus-loudness-distress/ · CC BY 4.0CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.
What this document does and does not do
Chamgap is an information source. It reports what research has and has not confirmed; it does not tell readers what to take or buy. That decision belongs to readers and, when needed, medical or legal professionals. This verdict reflects literature available up to the search date and may change as new research appears. Nothing here is medical advice.