Our son tried that for about half a year. While it didn't help, it might have and there were fewer side effects than with many of the other things he tried. Just be sure to hold on to something when you stand up after sitting for a while before you start walking for an hour or so after you take the pills.
We've more or less adopted a 'three tries' policy. If the doctor you are working with can't help you after they've fully tried their best three ideas: If you like him/her and they are local ask for a referral to a specialty center and ask them to manage locally going forward. Otherwise consider moving on to someone with different training, other ideas, etc.
I was just reading about a saliva test some doctors created in Springfield, Mo where the results tell you right off the bat several drugs which are less likely to work and which are more likely to work.
How about that? Spit in a tube and the results save you months of trying meds that are less likely to work.