Lithagogue is a rare word that refers to a medicine or method used to cause the expulsion or dissolution of gallstones. However, there are several synonyms for this term that can be used interchangeably. For instance, litholysis, lithotripsy, and lithotripsis are commonly used to describe the same procedure. Similarly, cholelithotripsy, cholecystectomy, and biliary lithotripsy are other related terms that can be used instead of lithagogue. In addition, some other synonyms include gallstone dissolution therapy, bile duct stone removal, and endoscopic retrograde cholangiopancreatography (ERCP) with sphincterotomy. Overall, these synonyms help to convey the same meaning as lithagogue while providing a wider range of options for writers and readers.