I'm so glad I found your post...I've been having foot pain and thinking it may be from the Stevia now. I use Stevia in water with lemon, as well as in my Tea. But lately, the taste hasn't been the same...seems to be bitter. Maybe its my body telling me something. My feet have started bothering me for about 4 months now. Started out in the joint under my big toe, so I thought I was getting a bunion. Now it hurts on the top of my left toe and both of my feet hurt most times when walking...especially in the morning, or wearing sandals etc. I've also been drinking lots of Kevita, which is sweetened with Stevia. I'm going to completely eliminate Stevia and hopefully this will go away. Will post and update soon.