if your body is having trouble assimilating the iodine, the B vitamins and C will help that. otherwise, its a matter of not taking enough. make sure youre taking youre selenium and go up as you will till you get some results. youll know. problems are easily remedied, even by the most severe reactions, by stopping. you can evaluate then, if need be. it doesnt sound like youre going to have a problem, you just need more.