Yes, it's 2% Lugol's solution. I'm using between 3 and 5 drops in a glass of orange juice about 2 to 3 times per week...mostly when I wake up feeling sluggish (lack of energy). Sometimes I go a week or so and don't feel the need for it.
Dialing in my thyroid was a 5-year adventure. To recap it as briefly as possible:
Started down the path of NDT drugs. Gotcha here is that you cannot alter the mix of T4 and T3 with NDT. You get what you get and that's what you get. NDT drugs did -not- work for me - they helped, but never could get things "right". I'd either get too much T4 and not enough T3, or vice-versa.
Talked my doc into started all over again. We started with synthetic T4 drugs only (generic Synthroid). We managed to get FT4 in the upper range, but since I have Hashimotos I also suffered from elevated RT3. My body wasn't converting enough T4 to T3. At this time, I was taking 88mcg of generic Synthroid alone. FT3 was still low and my TSH was still high. We added generic Cytomel to the mix (T3 drug) and this helped.
Over time, we adjusted Cytomel dose until FT3 was in the upper side of the range. Even so, my TSH was still elevated. So we upped the dose of T4 to 100mcg. I was also taking 10mcg of T3. Every time we adjusted dose, we had to run with it for 6 to 8 weeks before running blood work again (thyroid drugs take some time before the desired effect is achieved).
Ended up with a mixture of 100mcg of T4 and 20mcg of T3. Only then was FT4 and FT3 in the upper range and TSH at a comfortable 0.8. Yet I still have elevated RT3 to contend with, so I'm in discussions with the doc about titrating T3 dose up to compensate for elevated RT3. In essence, I'll need to run above range on FT3 in order to combat the excessive RT3 in my system.
Getting thyroid medications adjusted is a time consuming process. For me, I had to go through 5-years and 4 docs to get things where I am today. It was only the 4th doc that knew what he was doing and was willing to adjust dosing of both drugs. If I had it to do all over again, I'd make a b-line to the nearest endocrinologist to address this and -then- transition to my PCP once drug dosage optimization is reached.
Oh...one more thing: If you don't "feel" right and your doc says "You're fine": Kick that doc to the curb immediately! That's a lesson I learned throughout all of this.