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

Rogaine is the best-performing finasteride brand in July 2026, moving 40,000 units across 2 ASINs for 32.0% of Top 10 volume. Nutrafol follows with 30,000 units (24.0%), ahead of KIRKLAND on 20,000 units (16.0%).

With 8 brands splitting the Top 10 and 72.0% 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 $14.24 to $88.00, 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: B0GFBTZ1VP booked 7K units at $24.88, with ▲ 133.3% MoM change. On the growth side, B0GHZRX5KX leads positive momentum with ▲ 100.0% MoM growth on 2K units, with B0G5MPVW1V close behind at ▲ 100.0% MoM on 200 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.