Clenbuterol (weight loss/muscle)

Tier 4 — risky / avoid · Cardiac toxicity · Banned substance · Veterinary drug

A beta-2 agonist veterinary drug illegally used for weight loss and muscle preservation. NOT approved for human use in any country as a supplement. Causes dangerous cardiac arrhythmias, tachycardia, hypokalaemia, and cardiac hypertrophy. Multiple deaths documented from bodybuilding use. Banned by WADA and FDA. Contaminated meat from clenbuterol-treated livestock has caused mass poisonings. Extremely dangerous.

Dose: AVOID — not approved for human use; causes cardiac arrhythmias, hypokalaemia, and death