How many days before surgery should ginkgo biloba be discontinued?

Ginkgo Biloba Discontinuation Before Surgery

Ginkgo biloba should be discontinued 2 weeks (14 days) before elective surgery 1.

Rationale for 2-Week Discontinuation

The Society for Perioperative Assessment and Quality Improvement (SPAQI) consensus statement explicitly recommends holding ginkgo for 2 weeks preoperatively 1. This recommendation is based on the mechanism by which ginkgolide B, the active compound in ginkgo, displaces platelet-activating factor from its binding sites, thereby decreasing coagulation and potentially increasing bleeding risk 1.

Key Clinical Considerations

Bleeding Risk Profile

• Mechanism: Ginkgo interferes with platelet function through platelet-activating factor antagonism
• Drug interactions: Documented interactions with warfarin and potential potentiation of anticoagulant/antiplatelet medications 1, 2
• Evidence nuance: While case reports document bleeding complications, a meta-analysis did not demonstrate statistically significant bleeding effects 1. However, the precautionary principle applies in the perioperative setting where bleeding consequences can be catastrophic

Supporting Evidence

Multiple sources corroborate the 2-week recommendation:

• General perioperative herbal medicine guidelines recommend cessation of all herbal medicines 2 weeks before surgery 3
• Norwegian medical literature specifically recommends withdrawing ginkgo 2 weeks before elective surgery as a general precaution 2

Common Pitfalls to Avoid

1. Failure to ask: Patients often do not volunteer information about herbal supplement use, and clinicians frequently fail to inquire specifically about these medications 3
2. Assuming "natural" means safe: The over-the-counter nature of ginkgo leads patients to underestimate perioperative risks 4
3. Last-minute discovery: Identify ginkgo use during preoperative assessment with adequate time for discontinuation, not on the day of surgery

Clinical Algorithm

For patients taking ginkgo biloba:

• Identify use during preoperative assessment (ask specifically about herbal supplements)
• Instruct discontinuation 14 days before scheduled surgery
• Document compliance at pre-admission testing
• If patient presents within the 2-week window, consider risk-benefit of proceeding versus rescheduling based on bleeding risk of the specific procedure