Comparative Pharmacology
Head-to-head clinical analysis: ARESTOCAINE HYDROCHLORIDE versus MARCAINE HYDROCHLORIDE PRESERVATIVE FREE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ARESTOCAINE HYDROCHLORIDE versus MARCAINE HYDROCHLORIDE PRESERVATIVE FREE.
ARESTOCAINE HYDROCHLORIDE vs MARCAINE HYDROCHLORIDE PRESERVATIVE FREE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Arestocaine hydrochloride is a local anesthetic of the amide type. It stabilizes the neuronal membrane by inhibiting the ionic fluxes required for the initiation and conduction of impulses, thereby effecting local anesthesia.
Bupivacaine blocks sodium ion channels in nerve cell membranes, preventing the generation and conduction of nerve impulses, resulting in local anesthesia.
2-5 mg/kg intramuscularly every 60-90 minutes, not to exceed 500 mg total dose in a 12-hour period.
Local infiltration: up to 30 mL of 0.5% (150 mg) per dose. Peripheral nerve block: 30-40 mL of 0.5% (150-200 mg). Epidural: 15-20 mL of 0.5% (75-100 mg). Maximum single dose: 2.5 mg/kg (225 mg for 90 kg). Repeat doses after 3 hours, max 400 mg/24h.
None Documented
None Documented
Terminal elimination half-life is approximately 1.5–2 hours in adults with normal hepatic and renal function; prolonged in hepatic impairment or congestive heart failure.
Terminal elimination half-life in adults: 2.7 ± 1.2 hours (range 1.5-5.5 hours). In neonates, half-life is prolonged to approximately 8.1 ± 8.2 hours due to immature hepatic and renal function.
Renal excretion of unchanged drug and metabolites; approximately 90% excreted in urine as parent compound and metabolites (60% as unchanged drug, 30% as metabolites), with less than 10% fecal elimination.
Primarily hepatic metabolism to 2,6-pipecoloxylidide (PPX) and subsequent renal excretion. Renal excretion of unchanged bupivacaine accounts for approximately 5-10% of the dose. The remainder is eliminated as metabolites (PPX and others) in urine. Fecal excretion is negligible.
Category C
Category C
Local Anesthetic
Local Anesthetic