Vixea Manplus  adjunct or the third hallmark of normal erectile function is normal erectile function is testosterone and hormonal function again relatively poorly studied until about five years ago even today when when I look at men and measure their testosterone levels the range of a normal testosterone Manplus   is from about one hundred and seventy-five to eight or nine hundred and all of those studies were done about 17 years ago and looked at healthy twenty and thirty year old men and I'm looking around I don't see any 20 or 30 year old men here so for me to measure your testosterone at the age of 50 or 60 or 70 or 80 or 90 and compare that to a healthy 20 year old doesn't make a lot of sense in my book so I would tell you that we don't really know.