What’s the safe use of an iodine nasal spray? | Masterjohn Q&A Files #141 ⁉️Question: What’s the safe use of an iodine nasal spray? 👉So, the iodine in the food and supplement guide for the coronavirus most recent version, I included iodine as a nasal spray. It's very important to look at the percentages. And so, 0.5% is the concentration recommended and that means that if you get a 10% solution, which is the most common one, you want to dilute it down 20-fold, which means taking one part of the