Lotus heart is a kind of Chinese herb that can be eaten. Lotus heart can be cooked and eaten with other ingredients such as longan and round-grained rice; it can be paired with other medicines to be used as medicine; and it can also be taken in water to clear heart fire. Lotus heart is the dried young leaves and embryonic roots from the mature seeds of lotus in the water lily family, bitter taste, cold nature, to the heart, kidney meridian. It has the efficacy of transporting the heart and kidneys (heart fire descends and kidney water rises to restrain each other), clearing the heart and tranquilizing the mind (settling the mind by removing inner irritating heat), and astringing semen to stop bleeding. Lotus Seed Heart can be used to treat heat entering the pericardium (heat evils invading the pericardium), delirium tremens (delirium, nonsense), failure of communication between the heart and kidneys (heart fire, kidney yin deficiency, dysfunction of the physiological functions of the heart and kidneys), insomnia, spermatorrhea, and hematemesis (blood heat and vomiting of blood). Precautions: Lotus heart is bitter and cold, which can damage the spleen and stomach, and is forbidden for patients with deficiency of spleen and stomach (spleen and stomach weakness and cold). The use of the drug is recommended under medical supervision.