Zyflex :- Although erectile dysfunction and low libido are extremely common symptoms of low testosterone, they are fortunately extremely easy to treat. The root cause of low libido is easily reversible, and can be broken down into three different elements. The first is andropause, which is the natural decline in testosterone production that occurs with age.From the age of 22 onwards, the rate at which the male body is able to produce testosterone drops by between 2% and 4% every year. By the age of 35, this slow decrease in testosterone production severely impacts erectile function and strength.
http://www.facts4supplement.com/zyflex/