In January 2024, the FDA issued a warning about dietary supplements purchased on popular e-commerce websites like Amazon and Etsy that were made with toxic ingredients. Tejocote root, part of the hawthorn family, is a Mexican root supplement marketed for weight loss. 

An FDA analysis found that these dietary supplements, labeled as tejocote root or Brazil seed, are adulterated. Instead of tejocote, they were substituted with yellow oleander, a poisonous plant native to Mexico and Central America.