I was told you need to work it up in your system.
My dosage plan is (mg, 3 times a day):
100/100/100
100/100/200
200/100/200
200/200/200
200/200/300
300/200/200 (where I am now)
300/200/300
300/300/300 (what my goal is- 900mg per day)

I felt a little relief right away. The deep stinging pain died down. The more I take it, the less pain. By this time, I still have pain, but not like before.

Side effects so far: drowsiness, blurred vision, confusion...but not much. I notice an increase of the side effects when I up the dose. But then it goes away I guess once my body gets used to the dose.