Lauanum (ˈlȯd-nəm or ˈlȯ-də-nəm), also known as opium tincture or tincture of opium, is an alcoholic herbal preparation of opium. It is thus made by combining ethanol with opium. The term "laudanum," however, should be applied only to a specific tincture of opium containing approximately 10 milligrams of morphine per milliliter. There are several versions of laudanum including Paracelsus' laudanum, Sydenhams Laudanum (also known as tinctura opii crocata), benzoic laudanum (tinctura opii benzoica) , and deodorized tincture of opium (discussed below), among others. In addition, besides well-known versions, some people have begun making their own version of laudanum and naming it . Depending on the version, additional amounts of the substances and additional active ingredients (e.g. saffron, sugar, eugenol) are added, modifying its effects (e.g., amount of sedation, or anti-tussive properties). Care should be used not to confuse laudanum with paregoric, which is also known as camphorated tincture of opium (tinctura opii camphorata) (see discussion below).