Hydromorphone is used in medicine as an alternative to morphine and diacetylmorphine for analgesia and as a second- or third-line narcotic antitussive (cough suppressant) for cases of dry, painful, paroxysmal coughing resulting from continuing bronchial irritation after influenza and other ailments, inhalation
of fungus and other causes, and is generally regarded to be the strongest
of the latter class
of drugs, and was developed shortly after another powerful antitussive, heroin, was removed fr