There is no best pill for ED, everyone is different and reactions vary a lot.
I used Cialis for many years but suddenly it stopped working, I have no idea why. Maybe I’ve grown some kind of tolerance to the drug, maybe it’s my age, I don’t know.
I’m now taking avanafil and it works beautifully. Viagra was effective and Levitra did nothing for me but it seems to be a popular treatment among diabetics.