Which herbal supplement is associated with increased bleeding risk?

Which herbal supplement is associated with increased bleeding risk?

• A. Echinacea
• B. St. John’s Wort
• C. Garlic
• D. Ginkgo

Answer: (D)

Herbal supplements can affect blood clotting. Ginkgo biloba has antiplatelet properties that inhibit platelet aggregation and can prolong bleeding time. Because of this, taking ginkgo with anticoagulants (like warfarin) or antiplatelet drugs (such as aspirin) or before surgery can markedly increase the risk of bleeding. That’s why this herb is the one most strongly associated with increased bleeding risk among common options. Echinacea is mainly used for immune support and isn’t known for causing bleeding problems. St. John’s Wort affects medication metabolism and interactions rather than bleeding risk. Garlic can have some antiplatelet effects as well, but the question’s focus on a well-established bleeding risk points to Ginkgo.

Herbal supplements can affect blood clotting. Ginkgo biloba has antiplatelet properties that inhibit platelet aggregation and can prolong bleeding time. Because of this, taking ginkgo with anticoagulants (like warfarin) or antiplatelet drugs (such as aspirin) or before surgery can markedly increase the risk of bleeding. That’s why this herb is the one most strongly associated with increased bleeding risk among common options.

Echinacea is mainly used for immune support and isn’t known for causing bleeding problems. St. John’s Wort affects medication metabolism and interactions rather than bleeding risk. Garlic can have some antiplatelet effects as well, but the question’s focus on a well-established bleeding risk points to Ginkgo.