Comparative Pharmacology
Head-to-head clinical analysis: KETALAR versus KETAMINE HCL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: KETALAR versus KETAMINE HCL.
KETALAR vs KETAMINE HCL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Noncompetitive NMDA receptor antagonist; inhibits glutamate activity, modulates opioid receptors, and interacts with other neurotransmitter systems.
Noncompetitive NMDA receptor antagonist; blocks glutamate binding, and modulates opioid receptors, monoaminergic receptors, and voltage-gated calcium channels.
1-4.5 mg/kg IV or 6.5-13 mg/kg IM for induction of anesthesia; 0.1-0.5 mg/kg/min IV infusion for maintenance.
Induction: 1-2 mg/kg IV; Maintenance: 0.5-1 mg/kg IV or 10-30 mcg/kg/min IV infusion; Subanesthetic: 0.1-0.5 mg/kg IV; Analgesic: IM 2-4 mg/kg; Intranasal 1-3 mg/kg. Frequency: single doses or continuous infusion per clinical need.
None Documented
None Documented
Terminal elimination half-life: 2.5-3 hours (ketamine); norketamine: 12 hours. Clinical context: Short half-life facilitates rapid recovery, but context-sensitive half-life increases with infusion duration.
Terminal elimination half-life: 2–4 hours (alpha: 10–15 min, beta: 2.5–4 hr); prolonged in hepatic impairment and with repeated dosing (up to 12–24 hr for active metabolite norketamine).
Renal: 90% as metabolites (norketamine, dehydronorketamine); unchanged: 2-4%. Fecal: <3%.
Renal: 90% as metabolites (norketamine, dehydronorketamine, hydroxylated derivatives) and 4% unchanged; biliary/fecal: 3%; minor pulmonary exhalation.
Category C
Category C
General Anesthetic
General Anesthetic