Duratia 90 Mg is the most powerful dose of dapoxetine which is used in the treatment of Premature Ejaculation in men. Premature Ejaculation is a condition where men are unable to maintain the erection for a longer period of time. Duratia 90 (Dapoxetine hcl) is a selective serotonin reuptake inhibitor (SSRI) which increases the level of serotonin in nerves to improve the time to ejaculation and improve control over ejaculation.