Kids Fiber Gummies Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Metamucil is the best-performing kids fiber gummies brand in July 2026, moving 80,000 units across 2 ASINs for 25.8% of Top 10 volume. Amazon Basics follows with 60,000 units (19.4%), ahead of SmartyPants on 40,000 units (12.9%).

Volume is spread across 9 brands, with the top three holding 58.1% 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 $9.74 to $28.46, 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: B0CQKK8N32 booked 10K units at $12.88, with ▲ 0.0% MoM change. On the growth side, B0F5W5XRD5 leads positive momentum with ▲ 100.0% MoM growth on 2K units, with B0BSGLCHWV close behind at ▲ 60.0% MoM on 8K 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.