Weight Loss Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Etekcity is the best-performing weight loss brand in July 2026, moving 100,000 units across 2 ASINs for 25.0% of Top 10 volume. Serene Herbs follows with 90,000 units (22.5%), ahead of Physician's CHOICE on 80,000 units (20.0%).

With 9 brands splitting the Top 10 and 67.5% 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 $20.43 to $34.19, 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: B0015068TG booked 20K units at $15.16, with ▲ 100.0% MoM change. On the growth side, B01E3COD8K leads positive momentum with ▲ 50.0% MoM growth on 6K units, with B09DCB77Z4 close behind at ▲ 50.0% MoM on 3K 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.