Comparative Pharmacology
Head-to-head clinical analysis: MEPIVACAINE HYDROCHLORIDE versus XYLOCAINE PRESERVATIVE FREE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: MEPIVACAINE HYDROCHLORIDE versus XYLOCAINE PRESERVATIVE FREE.
MEPIVACAINE HYDROCHLORIDE vs XYLOCAINE PRESERVATIVE FREE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Mepivacaine hydrochloride is an amide-type local anesthetic that reversibly blocks nerve impulse propagation by binding to sodium channels in the neuronal cell membrane, thereby stabilizing the membrane and preventing depolarization.
Lidocaine stabilizes the neuronal membrane by inhibiting sodium ion influx, thereby blocking impulse initiation and conduction. It binds to voltage-gated sodium channels in the inactivated state, preventing depolarization and propagation of action potentials.
1-2% solution, 5-20 mL local infiltration or nerve block, maximum 400 mg per procedure.
Adult dose: 1-30 mL of 1% or 2% solution (10-600 mg) via subcutaneous infiltration, peripheral nerve block, or epidural; max 4.5 mg/kg (300 mg without epinephrine, 7 mg/kg [500 mg] with epinephrine) per 2-hour period.
None Documented
None Documented
Terminal elimination half-life approximately 2 hours (range 1.5–3 hours). In neonates and patients with hepatic dysfunction, half-life may be prolonged up to 8–10 hours.
Terminal elimination half-life approximately 1.5-2 hours in adults; prolonged in hepatic impairment (up to 3-4 hours) and congestive heart failure.
Primarily hepatic metabolism via amidase enzymes; ~95% excreted as metabolites in bile and feces, <5% unchanged in urine.
Renal excretion of metabolites (90-95% as metabolites, <5% unchanged); biliary/fecal excretion minimal (<1%).
Category C
Category C
Local Anesthetic
Local Anesthetic