Humic/fulvic acid. Purple sea moss, Irish Sea moss. Humic/fulvic acid drops can be bought on Amazon. A good brand will contain around 90-100 different minerals. The sea moss would be easier to consume and prepare while off the fast and provides around the same amount of minerals. Both are good choices. Iodine in very small quantities, I use Lugols 5% drops, 1-2 drops under my tongue. A few options for you.