Laudanum Uniform Controlled Substances Act, which regulated opium tincture (Laudanum) as a Schedule II substance (currently DEA #9630), placing even tighter controls on the drug. By the late 20th century, laudanum's use was almost exclusively confined to treating severe diarrhea. The current prescribing information for laudanum in the US states that opium tincture's sole indication is as an anti-diarrheal, although the drug is occasionally prescribed off-label for treating pain and neonatal withdrawal syndrome. Several historical varieties of laudanum exist, including Paracelsus' laudanum, Sydenham's Laudanum (also known as "tinctura opii crocata"), benzoic laudanum ("tinctura opii benzoica"), and deodorized tincture of opium (the
Drug Drug A drug is any substance (other than food that provides nutritional support) that, when inhaled, injected, smoked, consumed, absorbed via a patch on the skin, or dissolved under the tongue causes a temporary physiological (and often psychological) change in the body. In pharmacology, a drug is a chemical substance of known structure, other than a nutrient of an essential dietary ingredient, which, when administered to a living organism, produces a biological effect. A pharmaceutical drug, also called a medication or medicine, is a chemical substance used to treat, cure, prevent, or diagnose a disease or to promote well-being. Traditionally