Increased effects w/ halogenated volatile anesth, suxamethonium, corticosteroids; aminoglycoside, lincosamide, polypeptide & acylamino-penicillin antibiotics; diuretics, quinidine, quinine, Mg & lithium salts, Ca-channel blockers, local anesth (lidocaine IV, epidural bupivacaine), phenytoin or β-blockers. Recurarisation w/ aminoglycoside, lincosamide, polypeptide & acylamino-penicillin antibiotics, quinidine, quinine, Mg salts. Decreased effects w/ CaCl, KCl, phenytoin or carbamazepine; PIs eg, gabexate, ulinastatin. Potentiated or attenuated neuromuscular-blocking effects w/ other non-depolarizing neuromuscular blockers, suxamethonium. Quicker onset of lidocaine action.