All men know the name of Viagra, the first drug for potency. But not everyone knows Cikalis. This drug is a generic, but Cikalis is effective and cheap. Here is some information that will be interesting for all men. A team of researchers from New York University believes that in cases of suspected male impotence doctors should be interested among all traditional tests and examinations in the patient in the quality of his sleep, in particular the presence of sleep apnea. Sleep apnea is a frequent rejection, which affects more than four percent of the population of the world. Such a violation can not simply reduce the quality of human life, but also lead to serious consequences - diseases of the heart and blood vessels, increase blood pressure and stroke.