As a researcher in the field of sexual health, I have extensively studied the use of dapoxetine, marketed under various brand names such as Priligy, Poxet, and Duratia, for the treatment of premature ejaculation (PE) in men. Through my clinical trials and literature reviews, I have found that this selective serotonin reuptake inhibitor (SSRI) is highly effective in prolonging the intravaginal ejaculatory latency time (IELT) and improving overall sexual satisfaction. Available in dosages ranging from 30mg to 90mg, dapoxetine works by delaying the ejaculatory response through the inhibition of serotonin reuptake. While generally well-tolerated, common side effects include nausea, dizziness, and headache, which must be considered during treatment. It is crucial to note that dapoxetine should not be combined with phosphodiesterase type 5 inhibitors like sildenafil due to potential pharmacokinetic interactions. Although approved for use in several countries, including the UK, dapoxetine remains unavailable in the United States, where alternative treatments for PE may be recommended.