Dextromethorphan Hydrobromide Syrup is an over-the-counter cough suppressant that belongs to the category of central cough suppressants. Dextromethorphan Hydrobromide Syrup is a medication that can act as a cough suppressant by inhibiting the medullary cough center, and can be used to treat dry coughs, as well as coughs caused by bronchitis and upper respiratory tract infections. The application of dextromethorphan hydrobromide syrup may cause dizziness, headache, agitation, loss of appetite, drowsiness, constipation, nausea, skin allergies and other adverse reactions, which usually disappear on their own after stopping the drug. Overdose may cause bronchospasm, confusion, and respiratory depression. Dextromethorphan hydrobromide syrup is contraindicated in women in their third trimester of pregnancy, breastfeeding women, people with a history of psychiatric disorders, and people who have been off monoamine oxidase inhibitors for less than two weeks. If symptoms are not relieved after seven days of using Dextromethorphan Hydrobromide Syrup, consult a physician. Pregnant women, people with liver or kidney insufficiency, asthmatics, and people with a lot of phlegm need to use the drug with caution. Individuals should not abuse Dextromethorphan Hydrobromide Syrup on their own, but should follow the doctor’s instructions and standardize the use of medication.