Comparative Pharmacology
Head-to-head clinical analysis: LIDOCAINE HYDROCHLORIDE versus POLOCAINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LIDOCAINE HYDROCHLORIDE versus POLOCAINE.
LIDOCAINE HYDROCHLORIDE vs POLOCAINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Lidocaine hydrochloride is a sodium channel blocker that inhibits voltage-gated sodium channels in neuronal and cardiac cell membranes, stabilizing the membrane and preventing depolarization, thereby blocking nerve impulses and exerting local anesthetic and antiarrhythmic effects.
Local anesthetic that stabilizes the neuronal membrane by inhibiting the influx of sodium ions, thereby blocking nerve impulse propagation.
IV: 1-1.5 mg/kg bolus, then 1-4 mg/min continuous infusion. Max: 3 mg/kg (300 mg) loading dose. For ventricular arrhythmias.
100 mg orally every 12 hours
None Documented
None Documented
Terminal elimination half-life is 1.5–2 hours in adults. In patients with heart failure, hepatic cirrhosis, or those on CYP-inhibitors, half-life may be prolonged to ≥3 hours; in neonates, up to 3–6 hours.
Terminal elimination half-life approximately 1.5-2.0 hours in adults; prolonged to 3-5 hours in hepatic impairment and neonates.
Primarily hepatic metabolism (90% CYP3A4, also CYP1A2) to inactive metabolites (monoethylglycinexylidide, glycinexylidide); <10% excreted unchanged in urine. Renal elimination accounts for the majority of metabolite clearance.
Hepatic metabolism to 2,6-xylidine and 4-hydroxy-2,6-xylidine; <10% excreted unchanged in urine; approximately 70-80% of metabolites excreted renally, with <5% in feces.
Category A/B
Category C
Local Anesthetic / Antiarrhythmic (Class Ib)
Local Anesthetic