MEPIVACAINE IS A LOCAL ANESTHETIC OF THE AMIDE TYPE WITH AN INTERMEDIATE DURATION OF ACTION. MEPIVACAINE IS USED FOR INFILTRATION AND TRANSTRACHEAL ANESTHESIA, AND PERIPHERAL, SYMPATHETIC, REGIONAL (BIER'S METHOD), AND EPIDURAL NERVE BLOCKS IN SURGICAL AND DENTAL PROCEDURES.LIKE ALL LOCAL ANESTHETICS, MEPIVACAINE CAUSES A REVERSIBLE NERVE CONDUCTION BLOCKADE BY DECREASING NERVE MEMBRANE PERMEABILITY TO SODIUM. THIS DECREASES THE RATE OF MEMBRANE DEPOLARIZATION, THEREBY INCREASING THE THRESHOLD FOR ELECTRICAL EXCITABILITY.