Common side effects of dapoxetine can include nausea, headache, dizziness, and dry mouth. As an SSRI, dapoxetine may have similar side effects to other drugs in this class. It's important to discuss potential side effects with your healthcare provider.Inform your healthcare provider about your medical history and all the medications you are currently taking, including prescription drugs, over-the-counter medications, and supplements. Certain medications and medical conditions may interact with dapoxetine or increase the risk of side effects.