|Medical Claims||"Prescribed by Doctors in cases of Consumption, Bronchitis, Nervousness, and where the system is run down."|
|Vendors||Duffy Malt Whiskey Co.|
Duffy's Formula was a concentrated beef stock and whiskey nutritive tonic, containing Duffy's Pure Malt Whiskey, that was manufactured and sold by Duffy Malt Whiskey Co. Among other ailments, it was advertised as a cure for consumption (tuberculosis), bronchitis, nervousness, etc.