Quote: "UK / Europe; many; but here 15 % is similar to Lugols 5% (because they count in the Iodide contents) Ebay, health leads uk, Creedence.. many possibilities. "
That Health Leads one is slightly less than 5% actually. Someone was having a go at them for their misleading labelling on the amazon.uk site reviews. They didn't concede the point, but they did start putting the amount of Iodine delivered per drop on the label. It's 5.5 mg per drop, not 6.25, so clearly less than "5%".
(This is what I'm using at the moment).
They claim it's the " Hulda Clark " formula. Not quite sure why that would be anything special, but there you go.