Prozac (fluoxetine hydrochloride) has been shown to cause vomiting in a small number of patients. Due to individual differences, specific cases are treated as follows: Fluoxetine belongs to the selective 5-hydroxytryptamine reuptake inhibitor, this kind of drug is mainly through the selective inhibition of 5-hydroxytryptamine reuptake, increase the synaptic gap 5-HT concentration, so as to increase the central 5-HTergic neural function, play the antidepressant effect. Used for depression, obsessive-compulsive disorder and bulimia nervosa. Adverse reactions: systemic: allergy (rash, pruritus, rubella, anaphylactic reaction, etc.), chills, Lyell syndrome; digestive system: gastrointestinal dysfunction (diarrhea, nausea, vomiting, dyspepsia, dysphagia), dry mouth, etc.; neurological: headache, sleep abnormalities, dizziness, anorexia, fatigue and other symptoms. Precautions: should not be taken by pregnant or lactating women; driving a vehicle, working at heights and other personnel should be used with caution; children and adolescents under the age of 18 years, should be used under the guidance of a physician in strict accordance with medical advice. The application of the drug should strictly follow the doctor’s instructions, in the process of taking the drug feel uncomfortable, should immediately stop the drug to consult a doctor. Do not blindly self-medication, to avoid adverse effects.