Comparative Pharmacology
Head-to-head clinical analysis: LIDOCAINE HYDROCHLORIDE 0 8 IN DEXTROSE 5 IN PLASTIC CONTAINER versus XYLOCAINE 4 PRESERVATIVE FREE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LIDOCAINE HYDROCHLORIDE 0 8 IN DEXTROSE 5 IN PLASTIC CONTAINER versus XYLOCAINE 4 PRESERVATIVE FREE.
LIDOCAINE HYDROCHLORIDE 0.8% IN DEXTROSE 5% IN PLASTIC CONTAINER vs XYLOCAINE 4% PRESERVATIVE FREE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Lidocaine is an amide-type local anesthetic that acts by blocking voltage-gated sodium channels in neuronal cell membranes, thereby inhibiting the initiation and conduction of nerve impulses. This stabilizes the neuronal membrane and produces a reversible loss of sensation.
Lidocaine stabilizes the neuronal membrane by inhibiting sodium ion influx through voltage-gated sodium channels, thereby blocking the initiation and propagation of action potentials, resulting in local anesthesia.
Intravenous administration: 1-1.5 mg/kg bolus, followed by 1-4 mg/min continuous infusion for ventricular arrhythmias. Max dose: 3 mg/kg bolus, 4 mg/min infusion.
Maximum 4.5 mg/kg (not to exceed 300 mg) via subcutaneous infiltration, epidural, or nerve block; repeat dosing after 30 minutes if needed.
None Documented
None Documented
Terminal elimination half-life is approximately 1.5–2.0 hours after a single IV dose. In patients with heart failure or hepatic impairment, it may be prolonged to >3 hours. After continuous infusion, the half-life may increase due to accumulation.
Terminal elimination half-life: ~1.5–2 hours (adults). Prolonged in hepatic impairment, congestive heart failure, or neonates.
Lidocaine is primarily metabolized in the liver by CYP1A2 and CYP3A4 to active metabolites (MEGX, GX). Less than 10% is excreted unchanged in urine. Renal excretion accounts for about 20% of total clearance as metabolites and parent drug; fecal elimination is minimal (<5%).
Renal: ~90% as metabolites (mostly 4-hydroxy-2,6-xylidine and conjugates); <10% unchanged. Biliary/fecal: minor.
Category A/B
Category C
Local Anesthetic / Antiarrhythmic (Class Ib)
Local Anesthetic