Just be on the lookout for neurological disturbances. I used stevia freely for years until my feet started tingling and then hurting when I walked. I stopped stevia cold and it went away.
I don't trust white powder.
I have never seen anything in the chemistry of stevia that could cause such a problem. In fact the sugar molecules in stevia are not even absorbed.
Being that nearly all stevia extracts are cut with other substances such as maltodextrin, erythritol, lactose, or FOS I believe the agent the powder was cut with was more likely the culprit. Especially if it was causing a rise in blood sugar, which could have contributed to a neuropathy.