Very happy with this. I am trying to build up my iodine and understood that using the nascent form was by far the best way to do this. My first bottle had been from another brand - Harmonic Innerprizes - and it didn't seem to be making much difference to me. I think that over time it might even have been making my headaches worse, and possibly even my fatigue. I was on the verge of giving up on iodine, but had already bought this bottle of Detoxadine from the Finchley Clinic, so I decided to give this a try before stopping. Within about an hour of the first 3 drops, I had a surge of energy as I hadn't had for a long time - and even found myself dancing!! This has not been consistent, but I feel that in this first week of taking it, I am generally more alert, and generally in a better overall condition that I had been before, and I look forward to this improvement continuing. I am actually surprised how different 2 brands of the same type of iodine can be, and I am very happy with Detoxadine.