Being a prescription pill, it’s obvious for online pharmacy to have some undesirable side effects. The most common side effects of Viagra are headache, facial flushing and upset stomach. These side effects are generally mild and go away within few hours. However, if they don’t go away and cause any type of discomfort, you should immediately report to a medical doctor. In the majority of cases, Viagra is well tolerated by men and proves to be a suitable treatment for impotence.
