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Emergency Medical Minute


Aug 22, 2018

Author: Michael Hunt, MD

Educational Pearls:

Here is a list of some very toxic natural substances:



#5: Tetrodotoxin: Found in pufferfish and other aquatic species

#4: Ricin: made from castor beans

#3: Mercury: natural element absorbable through skin and gloves

#2: Batrachotoxin: found on poison dart frogs

#1: Botulinum toxin: produced by Clostridium botulinum and causes a descending paralysis

Editor's note: batrachotoxin is thought to be accumulated by the beatles and other insects dart frogs eat - those in captivity therefore are not poisonous