Comparative Pharmacology
Head-to-head clinical analysis: ANAFRANIL versus AVENTYL HYDROCHLORIDE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ANAFRANIL versus AVENTYL HYDROCHLORIDE.
ANAFRANIL vs AVENTYL HYDROCHLORIDE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Clomipramine is a tricyclic antidepressant (TCA) that inhibits the reuptake of serotonin and norepinephrine, with a higher potency for serotonin reuptake inhibition. It also has anticholinergic, antihistaminergic, and alpha-adrenergic blocking properties.
Nortriptyline hydrochloride, the active ingredient in Aventyl Hydrochloride, is a tricyclic antidepressant that inhibits the reuptake of norepinephrine and serotonin at the presynaptic neuronal membrane, increasing their concentrations in the synaptic cleft. It also has antihistaminic, anticholinergic, and sedative properties.
Initial: 25 mg PO tid; increase gradually to 100-150 mg/day. Maximum: 250 mg/day. Maintenance: lowest effective dose.
25 mg orally three times daily; may increase gradually to 150 mg/day in divided doses. Maximum dose 150 mg/day.
None Documented
None Documented
Terminal elimination half-life of clomipramine is approximately 21-26 hours; its active metabolite, desmethylclomipramine, has a half-life of approximately 36-42 hours. Steady-state is achieved within 7-14 days.
Terminal elimination half-life is approximately 19–24 hours; may be prolonged in elderly and patients with hepatic impairment.
Renal (primarily as conjugated metabolites, ~60-70% over 72 hours); fecal (biliary excretion of ~10-20%); <2% excreted unchanged in urine.
Primarily renal (approximately 70% as metabolites, <5% unchanged); biliary/fecal excretion accounts for ~30%.
Category C
Category C
Tricyclic Antidepressant
Tricyclic Antidepressant