The heart of lotus seed is the young leaves and embryonic root of the seed of lotus. Lotus heart is bitter in taste and cold in nature, and belongs to the heart and kidney meridians. Its basic effects are clearing the heart and tranquilizing the mind (stabilizing the mind by removing internal disturbing heat), astringing essence and stopping bleeding, and transporting the heart and kidneys (the fire of the heart descends and the water of the kidneys rises to control each other). It is mainly used for heat entering the pericardium (heat evils invading the pericardium), fuzzy consciousness, talking nonsense, irritability and insomnia, vomiting of blood due to blood heat and spermatorrhea. The contraindications and adverse reactions of Lian Zi Xin are not clear, but this product is bitter and cold, easy to hurt the spleen and stomach yang qi, and should not be taken by those who have deficiency of spleen and stomach (spleen and stomach weak and cold), and have loose stools. If you need to use the medicine, you should consult a professional doctor first and use it under the doctor’s guidance, don’t blindly use the medicine by yourself.