必利勁是商品名，通用名为盐酸达泊西汀片，吃了两年是否还有继续服用的必要，是要看疾病情况以及相关的治疗效果。 Dapoxetine Hydrochloride is mainly used to treat premature ejaculation. When using this medication, the doctor evaluates the risks of the medication versus the benefits reported by the patient and weighs the pros and cons before deciding whether it is still necessary to continue using the medication. It may be continued after 2 years of use if it is effective and no serious adverse effects have occurred; it may not be continued if it is not effective or if serious adverse effects have occurred. The use of dapoxetine hydrochloride can cause adverse reactions such as headache, dizziness, nausea, diarrhea, etc. The drug is contraindicated in people with known hypersensitivity to the product, in patients with significant pathological conditions of the heart, and in patients with moderate and severe hepatic injury. The drug should also not be used in conjunction with thioridazine, strong cytochrome P450 3A4 inhibitors, and monoamine oxidase inhibitors. The drug is a prescription drug and should be used under the supervision of a physician.