Due to a rare health condition I have, sedatives and pain killers cause urinary retention to me. I didn't know that antibiotics contain either of those, but I knew that the hard way when I once used an antibiotic and a few days later I ended up spending six hours trying to urinate. This rare issue I have is unrecognized in my country, so it was of no use talking to doctors about it, they have no clue about the antibiotics that I need, so the Internet is the only way for me to find an answer as I will soon undergo a minor surgery and I will have to take antibiotics, I just don't want to end up installing a catheter into my urethra!. Help please.