Dapoxetine is a short-acting selective serotonin reuptake inhibitor (SSRI) that . chain' peptide-based products to treat central nervous system disorders, such. Dapoxetine HCL is a inhibiting the serotonin transporter. Description. Dapoxetine 30 mgs x 30 ml. Dapoxetine, a new antidepressant, has been found to be safe and effective for the treatment of premature ejaculation.