How much iodine affects thyroid function?

I've been taking Lugol's for awhile now, and am up to 7 drops a day....I'm curious how many mcg's this is? The reason I am asking is because I was reading that taking 750mcg of Iodine will affect your thyroid, causing hypothyroidsim.

I already have this,and my levels are good now, so I want them to stay that way....I've lost weight and feel great, but I am loving my Lugol's and do not want to stop it anytime soon, but I am concerned about my hypothyroidism coming back! Tweet