Mescaline the skills necessary to handle them safely. Special regulations restricting their availability, possession, storage or use may apply." The peyote cacti and other mescaline-containing plants such as San Pedro are illegal in Western Australia, Queensland, and the Northern Territory, whilst in other states such as Tasmania, Victoria and New South Wales, they are legal for ornamental and gardening purposes. In Canada, France, The Netherlands and Germany, mescaline in raw form and dried mescaline-containing cacti are considered an illegal drug. However, anyone may grow and use peyote, or "Lophophora williamsii", as well as "Echinopsis pachanoi" and "Echinopsis peruviana" without restriction, as
Mescaline a few days. Mescaline causes cross-tolerance with other serotonergic psychedelics such as LSD and psilocybin. About half the initial dosage is excreted after 6 hours, but some studies suggest that it is not metabolized at all before excretion. Mescaline appears not to be subject to metabolism by CYP2D6 and between 20% and 50% of mescaline is excreted in the urine unchanged, and the rest being excreted as the carboxylic acid form of mescaline, a likely result of MAO degradation. The LD of mescaline has been measured in various animals: 212 mg/kg i.p. (mice), 132 mg/kg i.p. (rats), and 328 mg/kg