Laudanum example, the wife of the US president Abraham Lincoln, was a laudanum addict, as was the English poet Samuel Taylor Coleridge, who was famously interrupted in the middle of an opium-induced writing session of "Kubla Khan" by a "person from Porlock". Initially a working class drug, laudanum was cheaper than a bottle of gin or wine, because it was treated as a medication for legal purposes and not taxed as an alcoholic beverage. Laudanum was used in home remedies and prescriptions, as well as a single medication. For example, a 1901 medical book published for home health use gave the
Laudanum other such drugs continued to be legally available without prescription as long as they were labeled. It is estimated that sale of patent medicines containing opiates decreased by 33% after labeling was mandated. In 1906 in Britain and in 1908 in Canada "laws requiring disclosure of ingredients and limitation of narcotic content were instituted". The Harrison Narcotics Tax Act of 1914 restricted the manufacture and distribution of opiates, including laudanum, and coca derivatives in the US. This was followed by France's "" in 1916, and Britain's Dangerous Drugs Act in 1920. Laudanum was supplied to druggists and physicians in regular