We have been swinging for a year now, and my Hubby's own Mr. Happy also has his ups and downs. He has tried viagra and it really did not make a difference except the initial hardness, then it does it's up and down trick. I truely believe that it does not effect swinging except he is definatly imaginative with positions because that seems to help with the getting "up" again. We also don't seem to have this problem alone..I wonder if it is a comfort thing..