To be honest, erections were never the problem (I never technically would have said I had ED), I just wasn't motivated. Libido was the problem. I don't know anything about how Tadalafil works other than it raises nitric oxide, but I have a theory. My suspicion is that at least 50% of libido is having a unit that's running at the ready all the time, so that the slightest thought, etc., is enough to wake it up. At least that's how it seems for me. We assume the libido drives the erections, but I'm beginning to think it's kind of the other way around, at least somewhat. The whole reason I tried Tadalafil was that I'd read others saying that it helped, even guys without ED.
Before the Tadalafil, I was interested about once every other week. That's on TRT with good numbers. Not cool. Now, (I'm 54) I could go back to my 20s-30s preference of once or twice a day if my wife could keep up.
Hope that makes any sense. I know what I'm thinking but it's kind of hard to express properly.