Aminosteroids are a group of steroids with a similar structure based on an amino-substituted steroid nucleus.[1] [2] They are neuromuscular blocking agents, acting as competitive antagonists of the nicotinic acetylcholine receptor (nAChR), and block the signaling of acetylcholine in the nervous system.[3] These drugs include candocuronium iodide (chandonium iodide), dacuronium bromide, dihydrochandonium, dipyrandium, malouetine, pancuronium bromide, pipecuronium bromide, rapacuronium bromide, rocuronium bromide, stercuronium iodide, and vecuronium bromide.[4]