Toxicological Trivia from March 26, 2010: Secretariat of Health carried out an alert to all Mexican citizens, in July/2008 to avoid consuming the products called "Capslim" supposedly recommended for weight loss, since they contain toxic ingredients that can cause serious health problems. According to manufacturers the capsules contain "troncomin" an ingredient "natural" fighting obesity, but according to initial investigations the Capslim contains:
a) Thevetia peruviana;
b) St. John’s Wort;
c) Polyphenols.

Correct Answer a. Read more in Spanish article: Alert in Mexico with CAPSLIM for Slimming

Thevetia peruviana flower