Dapoxetine present in Vriligy is an SSRI type of drug. It works to inhibit the reuptake of a neurotransmitter or a chemical in the brain called serotonin. Serotonin is a chemical that stimulates feelings such as sexual arousal, pleasure, and orgasmic activity. The serotonin chemical concentration at the postsynaptic cleft helps to delay the semen ejaculation efficaciously. Though, the exact mechanism of Vriligy is not completely understood. Though, several men have gained desired results by using Vriligy.