I know this is a little old, but I just wanted to chime in. A month ago I started medicine to fight severe anxiety. The first couple weeks I had no sex drive at all, I could achieve an erection but I could not finish (bad for our solo play). Around the third week we found that I could finish but it took extreme concentration (on my part) and it left us both very tired at the end. Now it is actually enjoyable, the lasting longer part that is. And now we focus on the journey and not the end.
Not to be negative, but I was told it was surprising for me lose the libido then get it back.