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  • Title: Paroxetine: pharmacokinetic and antidepressant effect in the elderly.
    Author: Lundmark J, Scheel Thomsen I, Fjord-Larsen T, Manniche PM, Mengel H, Møller-Nielsen EM, Pauser H, Wålinder J.
    Journal: Acta Psychiatr Scand Suppl; 1989; 350():76-80. PubMed ID: 2530794.
    Abstract:
    To evaluate the pharmacokinetic properties, efficacy, and tolerability of paroxetine in elderly depressed patients, a clinical study was set up--initially at Aalborg Psychiatric Hospital in Denmark, and subsequently at the University Hospital in Linköping, Sweden. A total of 21 patients with a median age of 72 years were included in the study. After a single dose of 20 or 30 mg of paroxetine followed by two drug-free days, treatment continued with 20 or 30 mg daily for seven weeks. The majority of patients showed a continuous reduction in their HAMD scores, starting in the second week of treatment. Paroxetine was well tolerated at the doses given, and side-effects were mostly mild and transient. Steady-state, pre-dose plasma levels of paroxetine showed considerable variability, and the median steady-state concentration was higher in elderly patients compared with data from a previous study in young volunteers. Elimination half-lives also showed variability between these elderly patients, but tended to be longer after cessation of multiple dosing than after a single dose. They also tended to be longer than in the young volunteers. The results of this study do not advocate reduced doses of paroxetine in the elderly, but further studies are warranted.
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