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. All three studies found a significantly greater proportion of patients achieving the composite patient-reported outcome with dapoxetine 30 mg or 60 mg than with placebo at the end of the treatment period. Your doctor will only prescribe the higher dose for you if the 30 mg dose is insufficient, and providing you have not experienced any side-effects such as feeling faint. A chemical in grapefruit juice can increase the amount of dapoxetine in your bloodstream and this increases the risk of side-effects. If you do drink grapefruit juice, do not take a dapoxetine tablet for at least 24 hours afterwards. Both integrated analyses found significant reductions in distress related to ejaculation at study endpoint following dapoxetine treatment.PRILIGY contains the active ingredient dapoxetine and is a type of drug called a selective serotonin reuptake inhibitor (SSRI) and it is also known as a urological medicine. Dapoxetine hydrochloride | C21H24ClNO | CID – structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Dapoxetine tablets. 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.