 One review suggested that any weight loss effects from consuming hoodia dietary supplements may simply be secondary symptoms of potentially serious adverse effects that may occur from using it.The United States Federal Trade Commission recommends against the use of such diet products marketed with exaggerated claims for losing body weight through the use of dietary supplements, skin patches or creams.As "H. gordonii" and the whole genus "Hoodia" are threatened with extinction if international trade is not monitored, the genus is listed under CITES at Appendix II, and it is illegal to export plant material in any form from Africa without a CITES certificate being issued by proper authorities.