Women Vitamins Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Nature's Bounty is the best-performing women vitamins brand in July 2026, moving 130,000 units across 2 ASINs for 17.8% of Top 10 volume. O Positiv follows with 100,000 units (13.7%), ahead of vital proteins on 90,000 units (12.3%).

Volume is spread across 9 brands, with the top three holding 43.8% 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 $10.26 to $42.99, 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, B0DJDQCJX2 leads positive momentum with ▲ 50.0% MoM growth on 30K units, with B09KCCVL9V close behind at ▲ 33.3% MoM on 40K 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.