Laudanum from AIDS and cancer. Deodorized Tincture of Opium (DTO) is sometimes also erroneously employed to abbreviate ""diluted" tincture of opium", a 1:25 mixture of opium tincture to water prescribed to treat withdrawal symptoms in newborns whose mothers were using opioids while pregnant. The United States Pharmacopeia and FDA recommend that practitioners refrain from using DTO in prescriptions, given this potential for confusion. In cases where pharmacists have misinterpreted DTO, and received "deodorized tincture of opium" when "diluted tincture of opium" was meant, infants have received a massive 25-fold overdose of morphine, sometimes resulting in fatalities. Side effects of laudanum are
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