Gastrodin is a central antiemetic, mainly used to relieve nausea caused by radiotherapy or chemotherapy drugs; 3, ride dizziness Ning, vertigo stop for nausea caused by motion sickness or seasickness, but also can be used for pregnancy vomiting; 4, vitamin B6 is mainly used for pregnancy vomiting. Nausea is a special subjective feeling, patients with nausea should be identified as soon as possible after the cause of the disease, for the cause of the root cause of the treatment can be carried out, which can fundamentally eliminate the emergence of nausea symptoms.