Dapoxetine hydrochloride is a very common drug used clinically to treat premature ejaculation. Dapoxetine hydrochloride mainly acts on the human central nervous system to increase the content of 5-hydroxytryptamine neurotransmitter, which is an inhibitory neurotransmitter that can inhibit sexual excitement, and through this effect improve the human central nervous system’s control over ejaculation, thus achieving the effect of prolonging sexual life. Dapoxetine hydrochloride is used 1-3 hours before sex, the regular dose is one tablet at a time, about half an hour to an hour after the medication will have an effect. Usually the drug is metabolized quickly in the body, according to the frequency of their sexual life can choose to take as needed, it is recommended to take the drug up to 1 time a day.