Duratia is a brand name for a medication containing dapoxetine, which is primarily used to treat premature ejaculation (PE) in men. Dapoxetine is a selective serotonin reuptake inhibitor (SSRI) that works by increasing the activity of serotonin in the nervous system. It is typically taken on an as-needed basis, about 1-3 hours before anticipated sexual activity, and its effects can last for several hours.