^ 1.01.1Kim, YW; Kang, HE; Lee, MG; Hwang, SJ; Kim, SC; Lee, CH; Kim, SG. Liquiritigenin, a flavonoid aglycone from licorice, has a choleretic effect and the ability to induce hepatic transporters and phase-II enzymes. American Journal of Physiology. Gastrointestinal and Liver Physiology. 2009, 296 (2): G372–81. PMID 19074639. doi:10.1152/ajpgi.90524.2008.
歐盟:Regulation (EC) No 1333/2008 on food additives(「食品添加劑法規(EC)No 1333/2008」)
美國:Federal Food, Drug, and Cosmetic Act(聯邦食品、藥品和化妝品法案)•FDA's Limits on Food Additives(食品添加劑用量限制)•Code of Federal Regulations(Title 21)(聯邦法規第21編(第170至199節))•公認安全