Dextromethorphan, or dextromethorphan hydrobromide, is the same drug and there is no difference. Dextromethorphan hydrobromide is the name of a western medicine, commonly used in a variety of oral preparations, injections, as a centralized cough suppressant. It is used for dry cough caused by upper respiratory tract infections, acute or chronic bronchitis, bronchial asthma, pharyngolaryngitis, tuberculosis, etc. It can also be used for irritating dry cough caused by inhalation of irritants. Dextromethorphan hydrobromide can cause dizziness, headache, drowsiness, agitation, nausea, skin allergies and other adverse reactions. It is contraindicated in those who are allergic to the product. Contraindicated in patients taking monoamine oxidase blockers or in patients who have stopped taking the drug for less than two weeks. Contraindicated in pregnant and lactating women within the third trimester of pregnancy. Contraindicated in patients with a history of psychosis. Use with caution in patients with asthma, patients with excessive phlegm, and patients with hepatic or renal insufficiency. If you need to use the drug, you need to use it under the guidance of a doctor, do not use the drug on your own to avoid adverse effects on the body.