Magnetite is the oxide mineral spinel group magnetite, containing mainly iron tetraoxide (Fe3O4). It is not poisonous, and has salty and cold medicinal properties. It belongs to the heart, liver and kidney meridians. It has the effects of calming the liver and submerging the yang (suppressing too much yang rising in the liver), tonifying the qi and calming the asthma (astringing the qi to alleviate coughing and wheezing), calming the panic and tranquilizing the mind (using medicines that are heavy and calming in nature to stabilize the mind), and brightening the ears and eyes. Magnetite can be used for restlessness of the mind, insomnia, palpitations, and is often used together with Shen Qu to treat restlessness of the mind, insomnia, palpitations caused by liver fire, kidney deficiency and liver exuberance, panic, confusion of the qi, lack of guardianship of the god, or disturbance of the mind. It can also be used for blurred vision, tinnitus and deafness; hyperactivity of liver yang (exuberant liver yang, causing dizziness, dizziness and headache), dizziness and dizziness; and asthma due to kidney deficiency. This product should not be taken more than once if incorporated into pills and powder, and should be used with caution for those with weak spleen and stomach; adverse reactions are not known. Please do not use the medicine by yourself, if you feel unwell, please go to the hospital.