Sublingual B12 Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Nature's Bounty is the best-performing sublingual b12 brand in July 2026, moving 58,000 units across 2 ASINs for 29.3% of Top 10 volume. Nature Made follows with 50,000 units (25.3%), ahead of THORNE on 20,000 units (10.1%).

With 8 brands splitting the Top 10 and 64.6% 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 $9.23 to $24.00, 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: B006BY0JPA booked 8K units at $8.49, with ▲ 100.0% MoM change. On the growth side, B08DP545FG leads positive momentum with ▲ 100.0% MoM growth on 2K units, with B0C5TZCQG3 close behind at ▲ 66.7% MoM on 5K 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.