Tell your family to restrict their Google Searches to qualified iodine doctors or else they will get mostly negative BS designed to scare people.
Google "DoctorName Iodine"
Abraham, Brownstein, Cousens, Flechas, Derry, Davis, & Tenpenny for honest & accurate information about iodine.
This is also a great link:
High Doses in History - 1930’s by Dr. Sircus
We have to revisit the 1930s when iodine was still a universal medicine, present in the US Pharmacopeia and was used at much higher dosages than anyone even dreams of using today.The usual dose for treatment was 300 mgs (46 drops of full strength Lugol’s) to 1 gm (1000 mg, 154 drops). It is very important to realize that today’s Lugol’s is not universally the same as it was because of new federal legal requirements about concentration levels, where Lugols is regulated to 2% & 5% http://drsircus.com/medicine/iodine/iodine-dosages
Show them our testimonials: If they don't believe this, then they are too set in their ways to listen to anything you say. http://tinyurl.com/iodine-testimonials