Oxycodone
"I have low back pain and down my right leg from osteoporosis, arthritis and degenerative disc disease. For two years I have cried most of the night in severe pain. This medicine takes about 45 minutes to kick in and lasts about 3 hours at 5mg. The problem (I think) is that my doctor will not raise the dose, which I understand but only allows me to take it every 12 hours. After about 3-4 hours I'm in severe pain again and just watch the clock and cry. The label on the bottle says every 4 hrs as needed but will not refill if I take more than 2 a day. "