Hoodia actualment és inclosa a l'Apèndix II de la Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), que n'inclou les espècies que poden resultar amenaçades pel comerç incontrolat.[8]
↑Effects of 15-d repeated consumption of Hoodia gordonii purified extract on safety, ad libitum energy intake, and body weight in healthy, overweight women: a randomized controlled trial1,2,3Wendy AM Blom, Salomon L Abrahamse, Roberta Bradford, Guus SMJE Duchateau, Winfried Theis, Antonia Orsi, Caroline L Ward, and David J Mela, American Journal of Clinical Nutrition, 10-12-2011, [1]
↑Weight Loss Customers Are Being Hoodia-Winked, Harriet Hall, Science-Based Medicine, 11-8-2011, [2]
↑Maharaj, VJ, Senabe, JV, and Horak, RM. 2008. Hoodia, a case study at CSIR. Science real and relevant: 2nd CSIR Biennial Conference, CSIR International Convention Centre Pretoria, 17&18 November 2008, pp 4 [3][4]
↑P. Bruyns, C. Klak, P. Hanacek: Evolution of the stapeliads (Apocynaceae-Asclepiadoideae) - repeated major radiation across Africa in an Old World group. Molecular Phylogenetics and Evolution. 2014. v. 77, no. 1, p. 251--263. ISSN 1055-7903.