Mivacron is a brand name for the drug mivacurium chloride, which is a short-acting, non-depolarizing skeletal muscle relaxant. It is commonly used in anesthesia to facilitate endotracheal intubation during surgical procedures and to provide muscle relaxation during surgery or mechanical ventilation. Mivacron works by blocking the transmission of nerve impulses to the muscles, effectively causing temporary paralysis of the muscle fibers. It is administered intravenously, and its effects are rapidly onset but of short duration, making it suitable for procedures that require muscle relaxation for a brief period. The use of Mivacron requires careful monitoring of neuromuscular function, and its administration should be managed by healthcare professionals trained in the use of anesthetic drugs.