Vicodin is the fictional drug most closely associated with Gregory House’s addiction in House M.D.
House takes Vicodin to manage chronic pain caused by an infarction in the quadriceps muscle of his right leg. The medication contains hydrocodone and acetaminophen, and the series repeatedly explores its effects on House’s behavior, judgment, relationships, and medical career. His dependence becomes one of the show’s central long-running conflicts.
The story distinguishes legitimate pain treatment from addiction and shows House facing withdrawal, rehabilitation, and relapse. The character’s Vicodin use is not simply a personality detail; it affects hospital decisions and creates consequences for patients and colleagues. Viewers sometimes name morphine because House receives other pain medications in particular storylines, but Vicodin is the canonical drug tied to his addiction. The series also uses the medication as another parallel with Sherlock Holmes, whose literary counterpart is associated with drug use.