Comparative Pharmacology
Head-to-head clinical analysis: LIDOCAINE HYDROCHLORIDE VISCOUS versus XYLOCAINE 1 5 W DEXTROSE 7 5.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LIDOCAINE HYDROCHLORIDE VISCOUS versus XYLOCAINE 1 5 W DEXTROSE 7 5.
LIDOCAINE HYDROCHLORIDE VISCOUS vs XYLOCAINE 1.5% W/ DEXTROSE 7.5%
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Lidocaine is a local anesthetic that stabilizes neuronal membranes by blocking voltage-gated sodium channels, thereby inhibiting the initiation and propagation of action potentials. It also has antiarrhythmic properties (Class Ib) by accelerating repolarization and reducing automaticity in cardiac tissues.
Lidocaine is an amide-type local anesthetic that blocks sodium channels, thereby inhibiting the propagation of action potentials in peripheral nerves, leading to local anesthesia.
Adult: 15 mL (300 mg) orally every 3 hours, not to exceed 8 doses in 24 hours. Viscous formulation swished and swallowed.
Spinal anesthesia: 1.5-2 mL (22.5-30 mg lidocaine) for lower extremity or perineal procedures; 2-3 mL (30-45 mg) for lower abdominal or urological procedures. Administered via lumbar puncture.
None Documented
None Documented
Terminal elimination half-life: 1.5–2 hours (adults); prolonged in heart failure (2.5–4 hours) or hepatic disease (up to 5–7 hours). Context: short t1/2 limits toxic accumulation with topical use.
Terminal elimination half-life: 1.5–2 hours in adults with normal hepatic function; may be prolonged to 3–5 hours in patients with hepatic impairment or congestive heart failure.
Renal: ~90% as metabolites (mainly 4-hydroxy-2,6-xylidine and glucuronides), <10% unchanged. Biliary/fecal: minor (<5%).
Renal excretion of metabolites (predominantly 4-hydroxy-2,6-xylidine and conjugates) accounts for >80% of elimination; less than 10% eliminated unchanged in urine. Biliary/fecal excretion of metabolites contributes <10%.
Category A/B
Category C
Local Anesthetic / Antiarrhythmic (Class Ib)
Local Anesthetic