Final answer:
Ginkgo biloba can alter the effects of Warfarin, affecting blood clotting.
Step-by-step explanation:
Ginkgo biloba can alter the effects of Warfarin, affecting blood clotting. Warfarin is a medication commonly prescribed to prevent blood clot formation. Ginkgo biloba has been reported to interfere with the anticoagulant effects of Warfarin, which can increase the risk of blood clotting.