For me, it's got so many benefits. My body temp went back up closer to normal, I could feel the difference in energy when I got lax in taking it for a couple of weeks. But the biggest thing I see is clearing out my lungs. It's immediate for me as soon as it absorbs, I guess. I always take it with Selenium which is said to make the Iodine work better so even though I probably get enough I still take it then.