Magnetite powder, i.e. powdered magnetite, can be taken under the guidance of a physician according to the needs of the condition, and is used for palpitations and insomnia, tinnitus and deafness, and blurred vision. Magnetite is a mineral Chinese medicine with a cold nature and salty taste, and is attributed to the heart, liver and kidney meridians. The effects of magnetite are to calm qi and asthma (astringing qi to alleviate coughing and wheezing), calm the liver and subdue yang (suppressing too much yang qi rising in the liver), calm and tranquilize the mind, and improve hearing and eyesight. It is mainly used for tinnitus and deafness, dizziness, kidney deficiency and asthma, palpitation and insomnia, and blurred vision. The adverse reactions and contraindications of Magnetite are not clear at present. Note that this product should not be taken more than one, long time to take, people with weak spleen and stomach should be cautious, especially need to pay attention to the dosage of powdered service. The use of drugs need to be under the guidance of a doctor, not self-medication, in order to avoid adverse consequences. If there is any discomfort, please consult a doctor promptly.