Hey, I did the exact same thing, 10 days ago... generic Fin 5mg, split 4 ways... I noticed side affects almost immediately... I am 51 and have never had libido issues, or any other erectile dysfunction issues...at first, I thought it might be just psychological, since I had also read about the potential for side effects of this nature... but, after a day or two, I "tested" things out with my spouse, and definitely something was up... after a few more days, I just decided to not continue the treatment....I have read that in some patients the symptoms can linger for many months even after discontinuing...