Efficacy and tolerability of two different kinds of titration of paroxetine hydrocloride solution: An observational study

Background: Depressive disorders are expected to be the second highest cause of morbidity in the world until few years. Moreover, patients with depression frequently show many side effects and low compliance to therapy. To find a more tolerated and more efficacy therapy is a growing need. Objective: This observational study investigates the efficacy, safety and tolerability of paroxetine hydrochloride comparing slow versus standard titration in a population affected by Depressive Disoders (according to DSM 5). Methods: 186 outpatients were assessed throught the following scales: Hamilton Depression Rating Scale (HDRS) for depression and World Health Organization Quality of Life Scale Bref for the perceived quality of life (WHOQOL BREF). Treatment-emerged Adverse Events (TEAEs) were recorded throught selfreports. Statystical analysys was performed by GraphPad Prism Version 5.1. Results: The efficacy of paroxetine was confirmed in both titrations by the number of clinical remitters (HDRS • 7 at 12 weeks for 53% of the standard titration group and 58% of the slow titration group), without differences. About safety and tolerability there were more frequent TEAEs among the standard titration group (p < 0.01). Comparing WHOQOL BREF between the two groups at the recruitment and at the twelth week emerged a statistically significant difference (p = 0.003), with highest scores reached in slow titration group. Conclusions: Although the short observation period is an evident limit, this study is consistent to the literature about the efficacy of both titrations of paroxetine to improve depression and shows promising results about the increased tolerability of paroxetine slow titration.