Comparative Pharmacology
Head-to-head clinical analysis: AMITRIL versus PERTOFRANE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AMITRIL versus PERTOFRANE.
AMITRIL vs PERTOFRANE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Amitriptyline inhibits the reuptake of serotonin and norepinephrine, thereby increasing their synaptic concentrations. It also blocks histamine H1, alpha-1 adrenergic, and muscarinic receptors.
Tricyclic antidepressant that inhibits the reuptake of norepinephrine and serotonin at the presynaptic neuronal membrane, increasing their concentrations in the synaptic cleft.
Adults: Initial 25 mg PO once daily at bedtime, increase by 25 mg every 3-7 days as tolerated to typical maintenance 75-150 mg/day PO divided doses or single dose at bedtime. Maximum 300 mg/day.
150-300 mg oral in divided doses per day; 75-150 mg IM in divided doses per day
None Documented
None Documented
Terminal elimination half-life: 15–25 hours (mean 20 h); may extend to >40 h in elderly or hepatic impairment.
Terminal elimination half-life is 14–21 hours. Steady-state is reached within 5–7 days. The half-life is prolonged in elderly and patients with hepatic impairment.
Renal: ~70% as metabolites, <5% unchanged; fecal: ~30% via bile.
Primarily renal (70%), with 30% as unchanged drug; remainder as glucuronide and sulfate conjugates. Biliary/fecal excretion accounts for <5%.
Category C
Category C
Tricyclic Antidepressant
Tricyclic Antidepressant