Used primarily as a neuromuscular blocking agent in anesthesia to induce muscle relaxation during surgical procedures. It facilitates endotracheal intubation and improves surgical conditions by preventing involuntary muscle movements. Acts by competitively blocking nicotinic acetylcholine receptors at the neuromuscular junction, leading to temporary paralysis of skeletal muscles. Its effects are reversible with acetylcholinesterase inhibitors such as neostigmine. Not used for sedation or analgesia, so it is always administered alongside general anesthetics or sedatives. Due to its potency and duration, it is commonly used in controlled clinical settings like operating rooms and intensive care units.