Toxicity
•Inhibitors of thiol enzymes
–Heavy metals
•Blockers of Krebs cycle (citrate cycle): ATP
–fluoroacetates
•Emetic substances
–Apromorphine, zinc, copper sulfate
•Neurotoxicants
•Cardiotoxicants
–Selectively damage the heart
–Ex: cardioglucosides, digitoxin, aconitine, etc.