Comparative Pharmacology
Head-to-head clinical analysis: CITANEST versus CITANEST PLAIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CITANEST versus CITANEST PLAIN.
CITANEST vs CITANEST PLAIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Local anesthetic that blocks sodium channels in nerve cell membranes, inhibiting depolarization and propagation of action potentials, resulting in reversible loss of sensation.
Blocks sodium channels, inhibiting nerve impulse conduction.
Local anesthesia: 2-4 mL of 1% or 2% solution without epinephrine, maximum 5 mg/kg (300 mg for adults). Intravenous regional anesthesia: 0.5% solution, 40-60 mL, maximum 300 mg. Epidural: 1.5% solution, 15-20 mL, maximum 300 mg. Subarachnoid: 5% solution with glucose, 80-100 mg. Maximum total dose: 600 mg with epinephrine, 400 mg without epinephrine.
Prilocaine 1-2% solution: local infiltration, 1-20 mL of 1-2% (10-400 mg); nerve block, 10-40 mL of 1-2% (100-800 mg); epidural, 15-30 mL of 2% (300-600 mg). Maximum dose: 8 mg/kg (600 mg) as single dose, not to exceed 600 mg without epinephrine.
None Documented
None Documented
Terminal elimination half-life approximately 1.5-2 hours in adults; prolonged in hepatic impairment or neonates.
The terminal elimination half-life of prilocaine is approximately 1.5 hours in adults with normal hepatic and renal function. In neonates, the half-life may be prolonged to 3-4 hours due to immature hepatic metabolism. This short half-life supports its use for procedures requiring moderate duration of anesthesia.
Primarily hepatic metabolism; less than 5% excreted unchanged in urine. Metabolites are excreted renally. Biliary/fecal excretion is minimal.
Prilocaine is metabolized primarily in the liver via amidases, with major metabolites including o-toluidine and N-propylalanine. Approximately 50-70% of the dose is excreted renally as metabolites, with less than 2% excreted unchanged in urine. Biliary/fecal excretion is minimal (<5%).
Category C
Category C
Local Anesthetic (Amide)
Local Anesthetic (Amide)