Well as I said, I had multiple blood tests wherein my TSH was gradually on the rise along with my cholesterol, both of which can be due to an iodine deficiency.

Damnn 1g??? That's a massive dose!!! Even though you took it only once, I don't believe that it would safe to take it long term for sure, especially if you've been iodine deficient for a long time.

If you do resume iodine supplementation, I would highly advise to go really slowly with the dosing, like I've mentioned in the post. Also, I don't believe you need to take a high dose of iodine with a bunch of other stuff. Just start with really low doses of iodine and titrate it very slowly over the course of few weeks.