Comparative Pharmacology
Head-to-head clinical analysis: FLUPHENAZINE versus THIOTHIXENE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: FLUPHENAZINE versus THIOTHIXENE.
FLUPHENAZINE vs THIOTHIXENE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Antipsychotic that blocks postsynaptic dopamine D2 receptors in the mesolimbic system, with high potency and additional antagonism at alpha-adrenergic, muscarinic, and histaminergic receptors.
Thiothixene is a typical antipsychotic that blocks postsynaptic dopamine D1 and D2 receptors in the brain. It also has alpha-adrenergic and histamine H1 blocking activity, with minimal anticholinergic effects.
Fluphenazine decanoate (long-acting): 12.5-25 mg IM every 2 weeks; Fluphenazine hydrochloride (oral): 2.5-10 mg daily in divided doses; initial titration 2.5-10 mg/day, maintenance 1-5 mg/day. Maximum oral dose 20 mg/day.
Initial: 2 mg orally three times daily; maintenance: 5-30 mg/day orally in divided doses; maximum: 60 mg/day. IM: 4 mg 2-4 times daily; maximum 30 mg/day.
MODERATE Risk
MODERATE Risk
Clinical Note
moderateThiothixene + Deferasirox
"The serum concentration of Deferasirox can be increased when it is combined with Thiothixene."
Clinical Note
moderateThiothixene + Fluticasone propionate
"The risk or severity of adverse effects can be increased when Thiothixene is combined with Fluticasone propionate."
Clinical Note
moderateFluphenazine + Fluticasone propionate
"The risk or severity of adverse effects can be increased when Fluphenazine is combined with Fluticasone propionate."
Clinical Note
moderateTerminal elimination half-life is 15-30 hours, but may extend to 40-50 hours after chronic use; clinical context: dosing interval is typically 12-24 hours, and steady-state is reached within 3-5 days.
Terminal half-life: 10-20 hours (mean ~14 h). Clinical context: Steady-state achieved in ~2-3 days; allows once-daily dosing for maintenance.
Primarily hepatic metabolism with biliary excretion. Less than 1% excreted unchanged in urine; fecal elimination accounts for approximately 20-30% of metabolites.
Primarily renal: 65-70% as metabolites, <1% unchanged. Fecal: 15-20% via biliary elimination.
Category A/B
Category C
Typical Antipsychotic
Typical Antipsychotic
Fluphenazine + Haloperidol
"The metabolism of Haloperidol can be decreased when combined with Fluphenazine."