Which of the following herbal remedies can increase the risk of bleeding?

Chamomile is known for its potential to increase the risk of bleeding, particularly when used alongside other blood-thinning medications or supplements. This is due to its antiplatelet properties, which can interfere with blood clotting mechanisms. As a member of the Asteraceae family, chamomile may also contain compounds that could affect platelet function, making it important for individuals, especially those undergoing surgery or with bleeding disorders, to exercise caution when using this herbal remedy.

Valerian root, St. John's Wort, and lavender, while used for various therapeutic purposes, do not have the same well-documented association with increased bleeding risk. Valerian is primarily used for its sedative effects, St. John's Wort is commonly utilized for mood regulation but can impact the metabolism of certain medications, and lavender is often employed for relaxation and stress relief without significant concerns regarding bleeding.