Lynn,
I suggested taking the Vit C one hour before because I read it on our own forum. Maybe in the lost posts?
I thought Vit C was necessary to enhance the carrier of Iodine to the thyroid and that this needed a little time to get absorbed and work.
Also Vit C is an anti-oxidant and might counteract the effect of Lugol's solution.
I am not a scientist, just an enquiring mind!!! I do have a lot of perception and ideas, but unfortunately not the scientific background to back them up.
I am a very long time meditator and yogini, so I feel exactly what is happening and can guess a lot of things, but do not have the language to translate this in "scientific terms".
Sorry!