Dapoxetine is currently the only medication approved for the treatment of premature ejaculation by regulatory bodies worldwide. Unfortunately American men still can buy the product as it has yet to pass the FDA approval process.
Originally developed as an antidepressant, this short acting SSRI was found to have a novel side effect - it lengthened the performance of male user performance in the bedroom. Many countries in Europe have passed the treatment as safe, but at present it not yet available in the USA, pending more research.
There is also some debate about how well the treatment works. While it appears many suffers of premature ejaculation should experience some benefits, certainly not everyone will. Research findings vary but around 45 percent of men with the problem see an improvement.
As will all medication there are side effects. This drug is related to Prozac, so a similar response should be expected. This may include nausea, dizziness, bowel troubles, trouble sleeping and migraines.
There are also negatives associated with the long term use of SSRIs including psychological issues, weight gain and loss of sex drive.
Clearly Dapoxetine can help with premature ejaculation, this has been proven by at least two peer reviewed studies published in reputable journals. On the other hand the positives must be weighed against the long and short term side effects and the fact that it currently not available in America. You should talk to your doctor if you considering this medication - there are many other treatments that have been proven to be effective.