Levobupivacaine (rINN) is a local anesthetic that is an aminoamide group. It is the S-enantiomer of bupivacaine. It is an amide derivative of azobicaine hydrochloride with an anesthetic properties.
Left bupivacaine reversibly binds to voltage-gated sodium channels to regulate ion flux and prevent neuronal impulses from initiating and delivering (stabilizing neuronal membranes), leading to analgesia and anesthesia. Compared with racemic bupivacaine, levobupivacaine is associated with less vasodilatation and has a longer duration of action.