If you feel faint or dizzy, do not drive and do not use tools or machines. Very common dapoxetine side-effects these affect more than 1 in 10 men What can I do if I experience this? Phosphodiesterase-5 inhibitors. Local drug stores have sites; you may be able to use one to fill or renew a prescription. Behavioral techniques In some cases, therapy for premature ejaculation involves simple steps. Sit down until the feeling passes so that you do not fall and hurt yourself Headache Drink plenty of water and ask a pharmacist to recommend a suitable painkiller. This is so your doctor can check on your progress.Dapoxetine is prescribed for the treatment of premature ejaculation. Take one tablet hours before you have sex. The most common side-effects include feeling dizzy or faint, and feeling sick (nausea). Drinking a full glass of water at the same time as taking the tablet can reduce these effects. While antidepressant medications are only available by prescription, there are some over-the-counter (OTC) antidepressant herbs and supplements you can try. These have mild antidepressant qualities and may help relieve symptoms that are . not available over-the-counter (OTC) Was this helpful? How does Cialis work? Cialis works by increasing blood flow to the penis to help a person get and maintain an erection. It also blocks the.