Zoloft (Sertraline HCl) is one of a class of antidepressant drugs known as selective serotonin reuptake inhibitors (SSRIs). These drugs work by increasing the amount of serotonin that is available in the brain. Serotonin is involved in regulating mood and costo de tabletas de flibanserina general feelings of costo de tabletas de flibanserina well-being.