What happens when you use Viagra? Effects and Side Effects

Almost everyone knows about Viagra and also knows why this drug is used. Viagra is the drug for men only and cannot be used by women as it is used by the men who face erectile dysfunctional (ED) issues while sexual intercourse. Viagra has become very common courtesy to heavy marketing and frequent commercials on TV and radio. It is also known as sildenafil but it is only popular with the name Viagra. According to the statistics, Viagra was introduced in 1998 and since then men with erectile dysfunctional have gone up by 250 percent which is certainly an unbelievable increase.