Ginkgo Biloba: Plant-Based Proarrhythmic Potential?

Ginkgo biloba is a commonly used herbal supplement in the United States. We describe a 63-year-old man with a significant ventricular ectopic burden (32.7%) that was refractory to metoprolol tartrate (41.7%) and resolved (<1%) when Ginkgo was discontinued. This case supports a potential proarrhythmic side-effect of over-the-counter Ginkgo leaf extract. (Level of Difficulty: Beginner.).