Cis atracurium is preferred over atracurium due to advantage of
Cisatracurium is preferred over atracurium as it does not release histamine. Onset of action is same for both atracurium and cisatracurium. Cis-atracurium has longer duration of action.
Rapid onset
Sho duration of action
No histamine release
Less cardiodepressant
Muscle relaxants