“Urologist prescribed Tadalafil in preference to standard Prostate medications such as Tamosulin but as Tadalafil has a half-life in the body of 18 hours, taking a daily dose can build up such that side-effects can emerge. So after 5 days or so I switch to Sildenafil which has the same sort of beneficial effects for a couple of days and this regime works. These drugs increase availability of Nitric Oxide and there are indications that they repair neurons so possibly helpful to delay Alzheimer's. Beyond the known "uplift" my wife comments that the whole of my mood has been uplifted and that I'm a different person than before in a better way. Sildenafil and Tadalafil should be more widely known and recommended for older men in the normal course.”