Which herbal supplement is known for potentially increasing bleeding risk when taken with anticoagulants?

Ginkgo biloba is known for its potential to increase bleeding risk when taken in conjunction with anticoagulants. This herbal supplement contains compounds that can inhibit platelet aggregation, making it more likely that a person could experience excessive bleeding if they are also on blood-thinning medications. The interaction occurs because both ginkgo and anticoagulants can affect the coagulation process, leading to an increased risk of bleeding complications.

Ginseng, St. John’s Wort, and Echinacea do not have the same established association with increased bleeding risk. Ginseng is more often discussed in the context of affecting blood sugar levels and has mixed evidence regarding its interaction with anticoagulants. St. John's Wort is primarily known for its effects on serotonin levels and can induce certain liver enzymes, but it does not directly increase bleeding risk. Echinacea is generally used to boost the immune system and does not have prominent effects related to bleeding. Therefore, Ginkgo biloba stands out as the herbal supplement that requires caution when used alongside anticoagulants due to its specific pharmacological effects.