Do over-the-counter cough remedies work?
D000996:Antitussive Agents / Q000627:therapeutic use*; D002648:Child; D003915:Dextromethorphan / Q000627:therapeutic use; D004155:Diphenhydramine / Q000627:therapeutic use; D006801:Humans; D004366:Nonprescription Drugs / Q000627:therapeutic use*; D012893:Sleep Wake Disorders / Q000188:drug therapy*
D000996:Antitussive Agents; D004366:Nonprescription Drugs; D003915:Dextromethorphan; D004155:Diphenhydramine