J. Crows Iodine is high quality, and recommended by the Iodine Doctors. They have been prescribing it for years to their patients, also the identical formula in iodoral capsules.
There is a lot of BAD information on the internet about iodine. The only possible problem you might have is an allergic reaction or a possible detox symptoms because Iodine does force the toxins bromide & fluoride into the bloodstream.
Be certain you take ALL the co-supplements required by Dr. Brownstein, especially SELENIUM, iodine without selenium can damage the thyroid. http://tinyurl.com/Iodine-Handout