@californiazebI
I just order from amazon...........a combo gummy - potassium..."and" magnesium.
I don't mind basic sugar since I am not diabetic.........so I just go with the sugar ones

I do 50mg. of levothyroxine............direct to consumer program. Only 75.00 every three months.....before through a doctor prescription to Safeway, it "was" costing me 350.00 every 3 months (plus the drug insurance)...years.

I mentioned B3 to my endo doc...........he said it wasn't a good idea.

But I do take the vitamatic brand called "thyroid gummies"..........again on amazon. It has a bunch of stuff like a tad of iodine.