Thorne Magnesium Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

THORNE is the best-performing thorne magnesium brand in July 2026, moving 230,000 units across 3 ASINs for 32.9% of Top 10 volume. Pure Encapsulations follows with 170,000 units (24.3%), ahead of Double Wood Supplements on 70,000 units (10.0%).

With 7 brands splitting the Top 10 and 67.1% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $16.99 to $36.75, 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. Specifically, one ASIN forced its way in: B0797GZDZL booked 50K units at $16.00, with ▲ 25.0% MoM change. On the growth side, B00151G8L8 leads positive momentum with ▲ 100.0% MoM growth on 20K units, with B0D92XKTCY close behind at ▲ 100.0% MoM on 20K 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.