Hi...I was on this med for a while and it can be difficult to see the benefits while on it.....and it has an adjustment period once you are on a set dosage......but for those 2 to 3 weeks adjusting it was very difficult, I got new headaches in areas I did not have b4.....and was so tired and just in a fog a very heavy fog.
When I went back to my Dr to ask to be taken off this med I was told about the adjustment period and that it will change the headaches....and after a time I felt better while on it...and once ran out and boy was I aware how it was helping me....I no longer am on it or need it....but it was helpful for me once I got past some of that stuff and understood more how this med worked.