Three more 'tejocote root' products, and the plant inside was yellow oleander
Reported on 12 August: three more online weight-loss products added to the FDA's yellow oleander alert, which now runs to 25. The failure here is not a dose problem — it is that the plant in the capsule was not the plant on the label.
Arithmetic is the usual tool on this desk. It does not work on this story, because the number a buyer would want to check belongs to a plant that was never in the bottle.
Reported on 12 August, the Food and Drug Administration has added three more online products to its standing safety alert on yellow oleander. Each had been sold as tejocote root — Crataegus mexicana — or as “Brazil seed”. Analysis found Thevetia peruviana instead, as Healio reported: yellow oleander, described in that report as a toxic plant native to Mexico and Central America.
The agency’s wording is not hedged. These products, per the FDA notice quoted in that report, can cause neurologic, gastrointestinal and cardiovascular adverse events that could be severe or fatal. Two of the three also carry separate notifications about undeclared drug ingredients, per Food Safety News, which names those two as D Magic Plus and B. Magi.
The pattern is nearly three years old
None of this is a surprise, and that is the uncomfortable part. Healio notes that a CDC report published in September 2023 tested ten tejocote root products and found yellow oleander in nine of them. That report started the FDA’s own sampling programme, Food Safety News says; Healio puts the alert at 25 products.
Nearly three years later, the same substitution is still arriving by post, under new brand names, from sellers a buyer meets only as a website.
Identity is the question before dose
Most of what gets written here is a comparison between a dose on a panel and a dose in a study. That exercise has a silent premise: that the panel is describing what is actually inside.
A milligram figure is a promise about quantity. It says nothing about which plant was weighed. The control that catches this particular failure is an identity test — a species confirmation on the incoming raw material, documented and repeated lot by lot — and it is the one piece of paperwork almost no consumer-facing brand puts in front of buyers. A seller who publishes it has told you something more useful than any clinical-sounding sentence on the front of the box.
A botanical name on a label is worth nothing without that check. Two plants can share a common name, a growing region and a supply chain, and only one of them belongs in a capsule. We have made the same point about ingredients with a genuine literature behind them, where the risk is dose rather than identity.
What a supplement says about itself is not something the Food and Drug Administration evaluates before it goes on sale, and nothing in this category is intended to diagnose, treat, cure or prevent any disease, or to stand in for medical care. If you have taken something sold under any of these names, the person to raise it with is a clinician, today, and not a review site.