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|Title:||Lack of effect of citalopram on the steady-state pharmacokinetics of carbamazepine in healthy male subjects|
|Citation:||Journal of Clinical Psychopharmacology, 2001; 21(5):493-499|
|Publisher:||Lippincott Williams & Wilkins|
|Svend Erik Moller, Frank Larsen, Azhar Z. Khan and Paul E. Rolan|
|Abstract:||Carbamazepine, a drug used in the treatment of seizure disorders, and citalopram, a highly selective serotonin reuptake inhibitor used for the treatment of depression and other psychiatric disorders, are both metabolized predominantly by the cytochrome P4503A4 isozyme. In this study, the effect of subchronic administration of citalopram on the steady-state pharmacokinetics of carbamazepine was evaluated in 12 healthy male subjects. Carbamazepine was administered orally twice daily as a 100-mg dose from days 1 to 3, as a 200-mg dose twice a day from days 4 to 6, and as a 400-mg dose once a day from days 7 to 35. Citalopram, 40 mg, administered once daily, was added to the carbamazepine-dosing regimen on days 22 to 35. The steady-state plasma concentration profiles of carbamazepine and its active metabolite, carbamazepine 10,11-epoxide, on day 35 (in the presence of steady-state levels of citalopram) were compared to the corresponding carbamazepine and epoxide metabolite profiles on day 21 (in the absence of citalopram). No significant differences were found between mean steady-state values for maximal drug concentration, area under the curve, or time of maximal concentration values for carbamazepine and its epoxide metabolite before and after the addition of citalopram to the daily carbamazepine dosing regimen (p > 0.05). These results suggest that the use of citalopram in patients stabilized on carbamazepine should not produce clinically significant changes in carbamazepine plasma concentrations.|
|Keywords:||Humans; Citalopram; Carbamazepine; Serotonin Uptake Inhibitors; Anticonvulsants; Polypharmacy; Chromatography, High Pressure Liquid; Analysis of Variance; Area Under Curve; Maximum Tolerated Dose; Drug Interactions; Reference Values; Adolescent; Adult; Middle Aged; Male|
|Rights:||Copyright © 2001 Lippincott Williams & Wilkins, Inc.|
|Appears in Collections:||Pharmacology publications|
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