Pharmacokinetic Study of Levosulpiride

Tolerability and Pharmacokinetic Comparison of Oral, Intramuscular and Intravenous Administration of Levosulpiride After Single and Multiple Doses in Fasting Healthy Chinese Volunteers

The aim of this study was to characterise the pharmacokinetic properties and assess the safety of different formulations of levosulpiride in healthy Chinese volunteers.

Levosulpiride was administered to 42 healthy male and female (1:1) subjects as tablet (orally) and injection (intramuscularly and intravenously) formulations. Blood samples were collected at regular intervals after single and multiple drug administration. The concentration of levosulpiride in plasma was determined using a validated high performance liquid chromatography-tandem mass spectrometry method. Non-compartmental analysis was performed to estimate pharmacokinetic parameters. The analysis of variance was used to test for linearity and assess the effect of gender on the pharmacokinetic properties of the study drug. Adverse effects were monitored using investigators' questionnaires and subjects' spontaneous reports, vital sign measurements, hematology, clinical chemistry, and electrocardiogram.

12 subjects successively received a single dose of levosulpiride tablets 25, 50, or 100 mg via oral administration and 50-mg of levosulpiride tablets 3 times a day for 7 days.

30 subjects were randomly assigned to 1 of 3 treatment groups (25, 50, or 75 mg) via i.m. administration, the 50-mg group subjects also received levosulpiride by i.v. route and repeated administration by i.m. route (twice a day for 3 days).

Inclusion Criteria: body mass index between19 and 24 kg/m2 negative for HIV and hepatitis B had no clinical important findings on health tests thorax radiography and ECG with no abnormalities normal blood pressure values heart rate Exclusion Criteria: any drug treatment within 2 weeks before starting the study participation in another clinical study within the previous 3 months alcoholism and smoking pregnancy breast-feeding hypocalcemia blood donation or participation in other clinical trials within 3 months before enrollment in the study sitting blood pressure <80/50 mm Hg or >140/100 mm Hg A ventricular rate <60 beats/min or >100 beats/min at rest

Xu M, Zhou Y, Ni Y, He X, Li H, Sattar H, Chen H, Li W. Tolerability and Pharmacokinetic Comparison of Oral, Intramuscular, and Intravenous Administration of Levosulpiride After Single and Multiple Dosing in Healthy Chinese Volunteers. Clin Ther. 2015 Nov 1;37(11):2458-67. doi: 10.1016/j.clinthera.2015.08.024. Epub 2015 Sep 26.