Nightshade can treat insomnia. The function of the Chinese herb nightshade is to nourish the heart and tranquilize the mind, dispel the wind and open the ligaments, which is mainly used to treat insomnia and dreaminess, as well as rheumatism and paralysis and other related diseases. As for insomnia, it is mainly used to treat insomnia caused by weakness of yin and blood, which is more common due to stressful work and prolonged late nights, which consumes yin and blood and can be called neurasthenia in modern medicine. The application of nightshade can treat this kind of insomnia, and it can be combined with medicines such as helianthus bark, sour date, cypress seed, and farro, which are very effective for nourishing blood, replenishing yin, and clearing deficiency fire, and can significantly improve the depth of sleep and prolong the time of sleep.