必利勁是商品名，通用名为达泊西汀，主要用于早泄的治疗，服药1~3小时左右血药浓度达到高峰，药效能持续16~19小时左右，最长可达36小时。 Dapoxetine can inhibit the ejaculatory center and prolong the time needed for ejaculation, and is mainly used in the treatment of premature ejaculation in men. The effect is optimized when the blood concentration reaches its peak 1~3 hours after taking the product. Its overall efficacy generally lasts for 16~19 hours, which is a long time. It may also be effective for up to 36 hours in some people taking the drug. Frequent adverse reactions include dizziness, headache, diarrhea, nausea, insomnia, and fatigue, and it is contraindicated in patients who are allergic to the drug, as well as in patients with significant pathological conditions of the heart. It is recommended to consult a physician before using the drug and choose the appropriate medication regimen according to the situation, and should not be used blindly.