Ethan Cole is a urologist who long ago made peace with the fact that most of his most useful work happens in slightly awkward conversations. Erectile dysfunction is common, treatable, and still wrapped in embarrassment, and he has spent years learning to make the topic ordinary so that men actually get the care they need.
In the reader Q&A his instinct is to find the one thing that actually matters in each question and put it first. With the whole PDE5 family the non-negotiable is nitrates, and he says so plainly every time it is relevant. Around that hard stop, he is calm about the ordinary worries — timing, food, a headache, which pill suits which life.
He covers the three erection medicines here and compares them without playing favourites, because the best pill is the one that fits your body and your routine. As with everything on the site, his answers are general education from a doctor, not a treatment plan for you specifically.