The short answer
An added safety risk from ginkgo with glyburide has not been established. A small ginkgo study found mixed insulin responses, not a measured glyburide interaction.
What this answer covers
Defined Ginkgo biloba leaf extract EGb 761; not seeds, raw leaf or all commercial extracts.
- Supplement or preparation
- Ginkgo biloba
- Medication ingredient
- glyburide
The original findings were mixed
Ginkgo extract altered insulin responses differently across small diabetes subgroups. Even the subgroup with increased insulin secretion did not show lower glucose during the glucose-tolerance test.
A proposed mechanism was not a drug-level result
The authors proposed altered clearance, but the abstract did not establish glyburide exposure or an exact glyburide subgroup. This is not proof that ginkgo increases or reduces this drug’s clinical safety.
Glyburide already has a hypoglycemia risk
Glyburide stimulates insulin release and can cause serious low glucose. Poor intake, alcohol, kidney or liver impairment, and other glucose-lowering treatment can increase susceptibility. These risks do not provide a supplement-specific event rate.
Review changes without adjusting the prescription yourself
Tell the diabetes team when starting or stopping the supplement and follow the prescribed glucose-monitoring and low-glucose treatment plan. Do not change the glyburide dose or assume a short spacing gap prevents a glucose effect.
Evidence and practical considerations
Side effects & toxicity
Small ginkgo subgroup study has mixed surrogate findings and no verified exact glyburide exposure or clinical adverse outcome; clearance hypothesis not measured proof.
- Exact scope
- Defined Ginkgo biloba leaf extract EGb 761; not seeds, raw leaf or all commercial extracts. with Oral glyburide RxCUI 4815 IN, synonym glibenclamide; distinct formulation dosing retained.
- Medication form and route
- oral medication; oral supplement
What remains uncertain
- No unmeasured pair-event rate or arbitrary timing interval.
Factors that may matter: Preparation; Dose; Kidney/liver function; Food intake; Other glucose-lowering treatment.
Read the supporting source summaries
Source 1: current product label
dailymed.nlm.nih.gov · Source check Sep 10, 2026
Population: Patients prescribed oral glyburide
Glyburide stimulates insulin release and can cause severe hypoglycemia. Renal/hepatic impairment, deficient intake, alcohol and multiple glucose-lowering medicines increase susceptibility. Meal and individualized dose instructions apply.
How this applies: Exact oral glyburide active ingredient and named formulation.
Not glipizide, glimepiride or gliclazide. Formulations have different strengths and prescribing instructions; no supplement-specific adverse-event rate.
Source 2: current product label
dailymed.nlm.nih.gov · Source check Sep 10, 2026
Population: Patients prescribed oral glyburide
Glyburide stimulates insulin release and can cause severe hypoglycemia. Renal/hepatic impairment, deficient intake, alcohol and multiple glucose-lowering medicines increase susceptibility. Meal and individualized dose instructions apply.
How this applies: Exact oral glyburide active ingredient and named formulation.
Not glipizide, glimepiride or gliclazide. Formulations have different strengths and prescribing instructions; no supplement-specific adverse-event rate.
Source 3: original human study
pubmed.ncbi.nlm.nih.gov · Source check Sep 10, 2026
Population: 20 people with type 2 diabetes in three subgroups.
Insulin responses differed across metabolic subgroups; increased secretion in one subgroup did not lower glucose during testing. Drug clearance was proposed, not measured.
How this applies: Original exposure boundaries retained; not proof of a glyburide-herb outcome.
Small subgroups; oral hypoglycemic drugs not individually verified in abstract. No glyburide blood levels or exact-pair adverse-event rate. Publisher body access failed.
Research assessment: · Open full citations ↗
Review and change history
- Publication status
- Published research summary
- Clinical review
- Not yet recorded
| Date | Update |
|---|---|
| Article prepared | |
| Prepared exact glyburide article distinguishing direct drug warnings, comparator studies and indirect supplement evidence. | |
| Research summary published |
Article revision: 6fa2fa668ef0e2c8
This guide brings together the evidence records used by our interaction checker. Each finding retains its own preparation limits, research date, and source summaries.
Full citations require verification. Reading this answer and the source summaries does not.
Taking other supplements or medications?
Use the checker to explore your other combinations. Ask a pharmacist to review the exact products, amounts and medical conditions in your complete list.
Open the interaction checkerInformation, not medical advice. Do not change prescribed treatment based on this guide.