I would also recommend a re-evaluation of your pain management regimen, as 500mg of
tramadol per day is above the recommended maximum, as you have mentioned. Tramadol primarily works in a similar function to opiates. You may consider alternative approaches, such as treating neuropathic pain (nerve pain) and/or inflammatory pain.
There are many medications available for treating neuropathic pain, some can be taken by mouth and others can be applied topically.