Diazepam can be taken for severe cases of phytoneurological dysfunction. Phytoneurological dysfunction is a kind of autonomic dysfunction, and long-term mental stress, mental tension, age, gender, and genetic factors, clinical symptoms can involve all systems of the body, can be manifested as palpitations, chest tightness, insomnia, forgetfulness, abdominal distension, diarrhea and so on, it is recommended to consult the doctor in time and early treatment. Phytoneurological dysfunction can be improved by taking nutritive nerve drugs, such as glutamine, vitamin B1, etc.; if the effect is not good, you can also take benzodiazepines, such as diazepam, alprazolam and so on. Diazepam is a benzodiazepine sedative-hypnotic drug, which is mainly used in the treatment of insomnia, anxiety, epilepsy and other diseases in clinic, and can also be used to treat phytoneurological dysfunction. Its adverse reactions are drowsiness, hypotension, respiratory depression, etc. The drug is contraindicated for those who are allergic to benzodiazepines. Phytoneurological disorders recommend timely hospital consultation, under the guidance of the doctor the correct use of medication, do not take medication on their own, in order to avoid the occurrence of related adverse reactions.