Can anyone confirm what type of iodine is used in levothyroxine? I use povidone iodine (diluted) on my dog sometimes for itchy skin from mowed grass. After much research one site listed active ingredient in Levothyroxine as povidone iodine? Povidone I always thought was what medical staff use as topical antibacterial reasons. Why are we ingesting a form of iodine not recommended for ingestion? Lugols and some other oral brands have a very small amount of povidone iodine...I was just wondering why this is? Thanks.