Selective dopamine-2 (D2) and dopamine-3 (D3) receptor antagonist
Low doses of amisulpride may improve negative symptoms in schizophrenic patients, while high doses (equal to or greater than 600 mg/day) have anti-dopaminergic activity making it beneficial for treating positive psychotic symptoms related to schizophrenia or acute delusional attacks.
藥動學
Absolute bioavailability is 48%. Plasma protein binding is low (16%). Metabolism is limited, with most of a dose appearing in the urine as unchanged drug. The elimination half-life is approximately 12 hours after oral administration.
禁忌症
1. Known hypersensitivity to amisulpride
2. Pheochromocytoma
3. Prolactin-dependent tumor
4. Children below 15 years of age
5. Pregnancy, lactation
6. Concomitant use with drugs which may induce torsade de pointes:
(1) Class IA Antiarrhythmics (Quinidine, Disopyramide)
(2) Class III Antiarrhythmics (Amiodarone, Sotalol)
7. Concomitant use with Levodopa
8. Severe renal impairment (CrCl< 10mL/min)
懷孕分類
Use of the drug is not recommended during pregnancy unless the benefits justify the potential risks.
哺乳分類
An alternate drug may be preferred, especially while nursing a newborn or preterm infant. Some reviewers consider amisulpride to be contraindicated during breastfeeding.