A 12-week prospective randomized controlled comparative trial of vilazodone and sertraline in Indian patients with...

Depressive disorders are considered to be one of the leading causes of morbidity and mortality accounting for 4.3% of total disability-adjusted life years. Selective serotonin reuptake inhibitors and serotonin-norepinephrine reuptake inhibitors have greater efficacy and lesser side effects; at the same time, these drugs cause sexual dysfunction and weight gain. Vilazodone was supposed to have better efficacy and less sexual dysfunction and weight gain.

The aim is to compare efficacy (in terms of Hamilton Depression Rating Scale [HDRS]), sexual dysfunction (in terms of Arizona Sexual Experience Scale [ASEX]), and weight gain caused due to vilazodone and sertraline.

This is a randomized controlled study; 60 patients diagnosed with depressive episode were divided into two groups of 30 each; using block randomization technique, one group was prescribed vilazodone and another sertraline. The groups were compared on the basis of efficacy, weight gain, and sexual dysfunction using HDRS and ASEX at baseline, 4-week, and 12-week intervals. Statistical analysis was done by applying Chi-square test, Fisher's exact test, t-test, and repeated measures ANOVA using Wilks' lambda test.

On comparing both vilazodone and sertraline, it was observed that both molecules have equal efficacy in terms of HDRS, but vilazodone does not cause weight gain and sexual dysfunction in terms of ASEX, and these findings are statistically very highly significant.

Our study shows that vilazodone has similar efficacy but can be a better antidepressant due to lesser weight gain and sexual dysfunction compared to sertraline.