You can probably get some Lugols or potassium Iodide in India, not dangerous if you follow the recommendations over here about selenium supplementation etc.
I tried one Iodine aka the Atomidine (detoxified iodine) early on; too costly for me; little to no benefits.
I do like Edgar Cayce ,but IMO the needs back then was less than today; the halide imbalance and toxins in general have sky rocketed since he was here. Hence we need Iodine in mg sizes not mcg.