"i have chronic pain in my leg as well as nerve pain that is moderate to severe, i also have crps (complex regional pain syndrome) i have had five low back surgeries, one of the surgeries they replaced l4-l5 disc with a titanium disc and still i&#039;m in pain 24/7. the best and i mean the very best was levorphanol 2mg, along with other medicines, but the main pain medicine was levorphanol.  unfortunately i have not be able to get it since last april, 2010 due to supplier shortage. i have switch to morphine 60mg. "