Welcome melle! Check out the link that pharm_friendly posted. You can also take a look at the Other Drugs Directory and scroll down to tramadol to find out some information too. Here is a good thread from there. It's older, but there's still a lot of good info in there. Be careful not to take over 400mg so you won't have seizures.
Let us know if you need help getting around Bluelight and be safe!