Cheers, exactly what i was looking for. If i take any T3 it will be sustained or slow release and only very tiny amounts, just as a push along anyway, so i can kill fatigue a bit as body readjusts to the Iodine or in case i get stuck in remote south east asia somewhere and can't access my supplements and don't want to leave thyroid gland just hanging out to dry without any support while it still attempts to recover. It seems a bit of thyroid meds are ok just not enough to stop thyroid from doing it's job.