I think you may be on to something. Currently on 50mg I have lots of issues, throat clearing, stinging throat, popping in my right ear that drives me insane. I haven't ventured on up yet as I'm waiting on Boron to arrive. I've noticed the symptoms slack off with some good salt water, so there has to be a relation.
I 2nd the carbohydrate notion, coming from potatoes, fruit and small amounts of rice.