Comparative Pharmacology
Head-to-head clinical analysis: ISOCAINE HYDROCHLORIDE W LEVONORDEFRIN versus LIGNOSPAN FORTE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ISOCAINE HYDROCHLORIDE W LEVONORDEFRIN versus LIGNOSPAN FORTE.
ISOCAINE HYDROCHLORIDE W/ LEVONORDEFRIN vs LIGNOSPAN FORTE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Isocaine hydrochloride (mepivacaine) is an amino amide local anesthetic that blocks sodium ion channels in nerve cell membranes, thereby inhibiting the initiation and conduction of nerve impulses. Levonordefrin is a vasoconstrictor that acts on alpha-adrenergic receptors to cause local vasoconstriction, prolonging the anesthetic effect.
Lidocaine and prilocaine stabilize neuronal membranes by inhibiting sodium ion influx, thereby blocking initiation and conduction of nerve impulses.
Adult dental infiltration or nerve block: 1-2 mL of 2% solution (20 mg/mL isocaine hydrochloride with levonordefrin 1:20,000) administered subcutaneously; maximum single dose 5 mL (100 mg isocaine hydrochloride); maximum total dose 7 mL per appointment.
Adults: 2% lidocaine with 1:100,000 epinephrine, max 7 mg/kg lidocaine (500 mg) without epinephrine or 4.5 mg/kg (300 mg) with epinephrine; for dental infiltration or nerve block, 1-2 mL per site.
None Documented
None Documented
Terminal elimination half-life is approximately 2.1 hours; clinically, accumulation may occur with repeated doses in renal impairment.
Terminal elimination half-life of lidocaine: 1.5–2 hours; in hepatic impairment or heart failure, may extend to >4 hours. For the vasoconstrictor (epinephrine), half-life is approximately 2 minutes due to rapid uptake and metabolism.
Renal excretion of metabolites, primarily 4-hydroxy-2,6-dimethylaniline glucuronide and sulfate conjugates; less than 5% excreted unchanged in urine.
Renal excretion of metabolites (predominantly 4-hydroxy-2,6-xylidine and other conjugates): ~90%; biliary/fecal: <10% as unchanged drug.
Category C
Category C
Local Anesthetic with Vasoconstrictor
Local Anesthetic with Vasoconstrictor