A client is taking ginkgo biloba, ginger, and garlic. The nurse should inform the client these herbal preparations can cause which medication interaction?

A client is taking ginkgo biloba, ginger, and garlic. The nurse should inform the client these herbal preparations can cause which medication interaction?

• A. Decreases effect of oral anticoagulant
• B. Increases effect of oral anticoagulant
• C. No interaction
• D. Increases bleeding risk unrelated to anticoagulants

Answer: (B)

Herbal supplements like ginkgo, garlic, and ginger can affect blood clotting and interact with anticoagulant medications. Each of these herbs can influence platelet function or the body’s processing of anticoagulants, which can amplify the anticoagulant effect. When taken together with an oral anticoagulant (such as warfarin), this can lead to an increased risk of bleeding because the blood’s ability to clot is further reduced. So the best choice is that these herbs can increase the effect of an oral anticoagulant, heightening bleeding risk. In practice, this means patients should report herbal use to their clinician, INR should be monitored if on warfarin, and the herbs may need to be avoided or paused during anticoagulant therapy.

Herbal supplements like ginkgo, garlic, and ginger can affect blood clotting and interact with anticoagulant medications. Each of these herbs can influence platelet function or the body’s processing of anticoagulants, which can amplify the anticoagulant effect. When taken together with an oral anticoagulant (such as warfarin), this can lead to an increased risk of bleeding because the blood’s ability to clot is further reduced. So the best choice is that these herbs can increase the effect of an oral anticoagulant, heightening bleeding risk. In practice, this means patients should report herbal use to their clinician, INR should be monitored if on warfarin, and the herbs may need to be avoided or paused during anticoagulant therapy.