Hi,
As I'm five years post op, I reckon I've made progress on the nerve repair front, so I measure success based on quality of erections. With my twice weekly 20, I don't really notice any real boost considering it's an event dose. And also I notice that erections aren't so good after a couple of days. I notice a dip.
Taking 10 on alternate days gives me more constant results. I find it's the same for nocturnal erections. It's the closest I can get to taking a 5 daily (the tablets crumble if I try to quarter them).
I experimented with sildenafil too, but that had little effect. The best thing I ever tried was injections.
Cheers,
Kev.