Is Viagra guaranteed to work for everyone

Nobody can guarantee that Viagra will work for everyone, on an 88% test average Viagra has proven to work and helped men with erectile dysfunction to achieve an erection. There are cases where Viagra does fail or not be enough. Recent studies show that a low level of testosterone may be the cause of erection trouble, low testosterone reduces sex drive so psychologically and also physically the body may not respond normally. It is recommended you see your family doctor or a specialist before you commit to buying Viagra online as Viagra is focused on increasing blood flow in the vascular system and does not increase testosterone.