Inulin Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Metamucil is the best-performing inulin brand in July 2026, moving 70,000 units across 2 ASINs for 47.9% of Top 10 volume. Physician's CHOICE follows with 50,000 units (34.2%), ahead of Zenwise Health on 10,000 units (6.8%).

With 8 brands splitting the Top 10 and 89.0% 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 $17.97 to $23.96, 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: B000MGSI1K booked 2K units at $9.90, with ▲ 100.0% MoM change. On the growth side, B0GWMFZMCC leads positive momentum with ▲ 200.0% MoM growth on 300 units, with B0F11HLBFC close behind at ▲ 50.0% MoM on 600 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.