Dapoxetine, marketed as priligy (among and other brands) is the first compound developed specially for the treatment of premature ejaculation (pe) in men 1864 years old dapoxetine works by inhibiting the serotonin transporter, increasing serotonins action at the post synaptic cleft, and as a consequence promoting ejaculatory delay.as a member of selective serotonin reuptake inhibitor (ssri) family, dapoxetine was initially created as an antidepressant. However, unlike other ssris, dapoxetine is absorbed and eliminated rapidly in the body. Its fast acting property makes it suitable for the treatment of pe but not as an antidepressant.Synonyms (s)-n, n-dimethyl-3-(naphthalen-1-yloxy)-1-phenylpropan-1-amineiupac (s)-n, n-dimethyl-3-(naphthalen-1-yloxy)-1-phenylpropan-1-amineformula c21h23nomolecular weight 305.413cas 119356-77-3appearance nopurity 98%