chronic pain
"I find Tramadol to be extremely effective for my chronic low to medium grade pain.  I have chronic pain in my back and ankles and shoulder due to osteoarthritis.  

For me the big advantage with Tramadol, esp. the low 37.5 mg with acetaminophen dose is I don't feel slowed down at all.  I use it  PRN for days when I'm playing tennis or have work or extended walking to do.  

Now I sometimes take another 37 mg after exercise.  I have used 100 mg time release and 200 mg time release for special times like high demand days for travel or moving, etc."