Several herbal supplements can increase the risk of bleeding, often due to their effects on blood clotting or platelet function. Acerola powder, rich in vitamin C, may have a mild anticoagulant effect, while aloe vera can have a blood-thinning effect when taken in large doses. Angelica, known for its traditional use in improving circulation, has been associated with an increased risk of bleeding due to its ability to inhibit platelet aggregation. Aniseed and anise, both containing compounds that may interfere with blood clotting, can also raise bleeding risk. Ashwagandha, although generally considered safe, might have mild anticoagulant properties when consumed in high amounts. Bilberry, with its anthocyanin content, could affect blood clotting mechanisms, and black cohosh, used for menopausal symptoms, may increase bleeding risk due to its estrogen-like effects on the body.