Tiratricol (TRIAC, thyroid hormone analogue)

Tier 4 — risky / avoid · Thyrotoxicosis · Cardiac arrest · Weight loss fraud

A thyroid hormone analogue (triiodothyroacetic acid) sold illegally as a weight loss supplement. Causes thyrotoxicosis, cardiac arrhythmias, and has resulted in deaths. FDA issued a public health advisory and import alerts. Suppresses the thyroid axis, causing dependence. Particularly dangerous because the weight loss it causes is from muscle wasting and metabolic crisis, not fat loss. Found in products marketed as "metabolic boosters."

Dose: AVOID — causes thyrotoxicosis, cardiac arrhythmias, and death; FDA import alert active; no safe supplement dose