To be honest the back and foot pain could have been caused by something other than the Diovan. I tried Cozaar for three days and then I looked on some discussion forum on the internet and saw people reporting all sorts of nasty side effects so i got scared and stopped taking it. Actually, though, in those 3 days I didn't notice any problems, so perhaps I should have continued. How long have you been taking it for, Vladimir?
At any rate as of today I'm back on the original BP drug I tried, Diovan, but in a smaller dose, 40 mg.