Iodine Supplement Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Clean Nutraceuticals is the best-performing iodine supplement brand in July 2026, moving 15,000 units across 2 ASINs for 23.8% of Top 10 volume. Life Extension follows with 9,000 units (14.3%), ahead of Amazon Basics on 9,000 units (14.3%).

Volume is spread across 9 brands, with the top three holding 52.4% between them. No single label controls the shelf, which usually leaves room for a well-differentiated listing to take share without outspending an incumbent. Average selling prices among the leaders run from $9.23 to $25.45, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. On the growth side, B00024D1ZA leads positive momentum with ▲ 233.3% MoM growth on 1K units, with B0BZT3WBT5 close behind at ▲ 100.0% MoM on 1K units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.