Cisatracurium besylate is a medication used as a muscle relaxant during general anesthesia or mechanical ventilation in intensive care units (ICUs). It belongs to a class of drugs called non-depolarizing neuromuscular blocking agents.

Cisatracurium besylate works by blocking the action of acetylcholine at the neuromuscular junction, leading to skeletal muscle relaxation. This helps to facilitate endotracheal intubation, reduce muscle movement during surgery, and improve surgical conditions for the surgeon.