Dragon teeth have the effects of calming the nerves, clearing away heat and removing annoyance. Dragon teeth are mainly used to treat epilepsy, madness, palpitation, insomnia and dreaminess, body heat and upset. Dragon teeth mainly contain calcium carbonate and calcium phosphate, and also contain a small amount of iron, potassium and sodium. It has central sedative effect, and can reduce the levels of dopamine and homovanillic acid in brain tissue of mice, thus calming the central nervous system. Dragon teeth can be used to treat children's day fishing. They can move their hands and feet, look uncertain, sometimes laugh, cry and get angry. Dragon teeth can be eaten with Uncaria rhynchophylla, cicada slough and cinnabar, which has great effect on people.