I have tried to buy the potassium iodide from Fair & Pure but I can only find the bottle of 150 micrograms, which might make it tricky to start slow as you advised. Do you have any thoughts on this?

Yes you can start with the Fair and Pure Iodine if you'd like. You can split the tablet into 2 so that you start with 75 mcg. Some of my clients just start at 150 mcg and they are OK with that. Starting at 50 mg is really just a precautionary measure in case you have strong reactions. It doesn't need to be exactly perfect.