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Dosage range (mg/day) [4] ~80% SERT occupancy (mg/day) [5] [6] Ratio (dosage / 80% occupancy) Citalopram: 20–40: 40: 0.5–1 Escitalopram: 10–20: 10: 1–2 Fluoxetine: 20–80: 20: 1–4 Fluvoxamine: 50–350: 70: 0.71–5 Paroxetine: 10–60: 20: 0.5–3 Sertraline: 25–200: 50: 0.5–4 Duloxetine: 20–120: 30: 0.67–2 Venlafaxine: 75 ...
Blood or plasma citalopram concentrations are usually in a range of 50-400 μg/L in persons receiving the drug therapeutically, 1000–3000 μg/L in patients who survive acute overdosage, and 3–30 mg/L in those who do not survive. [46] [54] [55] It is the most dangerous of SSRIs in overdose. [56]
This is a complete list of clinically approved prescription antidepressants throughout the world, as well as clinically approved prescription drugs used to augment antidepressants or mood stabilizers, by pharmacological and/or structural classification.
Celexa – an antidepressant of the SSRI class; Centrax – an anti-anxiety agent; Clozaril – atypical antipsychotic used to treat resistant schizophrenia; Concerta (methylphenidate) – an extended release form of methylphenidate
Classically, for clinical indications of an approved drug, TI refers to the ratio of the dose of the drug that causes adverse effects at an incidence/severity not compatible with the targeted indication (e.g. toxic dose in 50% of subjects, TD 50) to the dose that leads to the desired pharmacological effect (e.g. efficacious dose in 50% of ...
Acute use (1–3 days) yields a potency about 1.5× stronger than that of morphine and chronic use (7 days+) yields a potency about 2.5 to 5× that of morphine. Similarly, the effect of tramadol increases after consecutive dosing due to the accumulation of its active metabolite and an increase of the oral bioavailability in chronic use.
For the drugs administered by oral and dermal route, the units of threshold dose are mg/kg body-weight/day (dose of the drug in mg per body weight in kg per day) or ppm (parts per million), while the threshold dose of drugs by inhalation delivery has the unit of mg/L 6h/day (amount of drug in mg in 1L of air, for 6 hours per day).
The recommended maximum daily dose of citalopram and escitalopram was reduced due to concerns with QT prolongation. [ 92 ] [ 93 ] [ 94 ] In overdose, fluoxetine has been reported to cause sinus tachycardia , myocardial infarction , junctional rhythms , and trigeminy .