Pipecuronium bromide

Pipecuronium (Arduan) is a bisquaternary aminosteroid muscle relaxant which blocks nicotinic acetylcholine receptors at the neuromuscular junction. It is also an antagonist of M2 and M3 muscarinic receptors and is the most potent neuromuscular blocking agent of the aminosteroid class.^{[citation needed]}

It is sold under the trade names Arduan and Pycuron.