Patients who take Dapoxetine as prescribed by their doctor are generally not harmful. Some patients may experience side effects such as mild headache and nausea while taking the drug. The main ingredient of Dapoxetine is Dapoxetine Hydrochloride, which belongs to a selective 5-hydroxytryptamine reuptake inhibitor. Currently, it can be used to treat conditions such as premature ejaculation and poor ejaculatory control. Usually, the side effects of Dapoxetine are minor and will not cause harm to the body if the patient takes the medication as prescribed by the doctor. Some patients who take too much of the drug may experience adverse reactions such as headache, dizziness, nausea, diarrhea, etc. However, these side effects are usually temporary and can disappear on their own after stopping the drug. The use of this drug is contraindicated for those who are allergic to the components of Dapoxetine, moderate and severe liver damage, as well as patients with significant pathological conditions of the heart, so as not to be detrimental to the recovery of the disease, but also to damage the health of the body. The drug can not be used together with thioridazine, strong cytochrome P450 3A4 inhibitors, monoamine oxidase inhibitors. Patients taking Dapoxetine, once the body abnormal discomfort, need to go to the regular hospital.