"Can pulsed Iodine be used as a symptom indicator trigger for insufficient manganese and B1?
If so, under what conditions? "
No i think it cannot ,in a normal thyroid after 10 days of to much Iodine the thyroid would resume no symptoms would occur . in a unhealthy thyroid caused by reason x the thyroid would resume on the days where you do not take Iodine no symptoms would occur.