I am unable to take morphine (I have a bad reaction to it) so at the mo I'm taking tramadol which isn't touch the pain anymore as I've been taking it for months now. I suffer from lower back pain and have done for 10 years+. I'm wondering if there is a drug that is stronger than tramadol that I can take instead of morphine, morphine does kill the pain but the side effects aren't worth it. I also take pregabalin. I live in the UK.