Black draught (Latin: Haustous) was a patent medicine used as a purgative in the 19th century and well into the early part of the 20th century, with veterinarians prescribing these to constipated cattle and horses. It is a saline aperient mixture used along with blue mass. Isabella Beeton's Book of Household Management (1861) has a recipe for a black draught: "Thedford's Black-Draught" was marketed through booklets such as the 1899 "The Ladies Birthday Almanac" by The Chattanooga Medicine Company.