Cinnamon and Rhizoma Coptidis are combined in water for the same effect as Jiaotai Pills. Jiaotai Pills have the effect of communicating with the heart and kidney (the fire in the heart goes down and the water in the kidney goes up, which are in mutual control), clearing the fire and tranquilizing the mind. Yellow dock and cinnamon in water have a limited amount of active ingredients and are not as effective as in pills. Cinnamon is the dried bark of Cinnamomum camphora, which can tonify fire and help yang (replenish the body’s yang qi), dissipate cold and relieve pain (relieve pain by removing the body’s cold), and invigorate blood circulation and menstruation; Huanglian is the dried rhizome of Huanglian (buttercup plant), Rhizoma Coptidis, Rhizoma Triangularis, or Rhizoma Yunlian (Yunlian plant), which can clear away heat and dampness (clear away heat and dry up dampness), and laxative and detoxicating (get rid of the body’s fire and toxic evil). The two together form Jiaotai Pill. Jiaotai Pill has the effect of communicating with the heart and kidneys, clearing fire and tranquilizing the mind, and can be used for treating the symptoms of heart-fire partial exuberance, heart-kidney non-compliance, which are seen as dazed and anxious (heartbeat is violent and panic-stricken), and restlessness in sleep at night. It is recommended to take Cinnamon and Rhizoma Coptidis infusion in moderation under the guidance of a doctor to avoid any misunderstanding or adverse reaction.