必利勁 is the trade name and generic name for dapoxetine hydrochloride, which needs to be taken before engaging in sexual intercourse and should not be taken routinely. Dapoxetine hydrochloride needs to be taken about 1 to 3 hours before engaging in sexual intercourse. The maximum recommended dosage use of dapoxetine hydrochloride is every 24 hours. Therefore, it should not be taken routinely. Nausea, dizziness, headache, diarrhea and other symptoms may occur while taking dapoxetine hydrochloride and should not be taken lightly. The drug is contraindicated in people with a known allergy to the product, in patients with a significant pathological condition of the heart, in patients with moderate and severe liver damage. The drug should also not be used in conjunction with thioridazine, strong cytochrome P450 3A4 inhibitors, and monoamine oxidase inhibitors. Taking Dapoxetine Hydrochloride needs to be under the guidance of a doctor to take the drug, not blindly self-medication, so as not to aggravate the condition.