Best-selling b8 (inositol) brands on Amazon

By estimated revenue, Theralogix is the best-selling b8 (inositol) brand on Amazon right now, at roughly $2.3M/mo from 4 products in the B8 (Inositol) Best Sellers top 100 (best position #5). By estimated units, Wholesome Story sells the most, about 55.1K a month, usually at a lower price per unit. These are SuppRanked's modeled estimates from public Amazon Best Sellers ranks and list prices (October 15, 2026), not official Amazon sales data.

On October 15, 2026 the #1 product in Amazon's B8 (Inositol) Best Sellers list was Wholesome Story Myo-Inositol & D-Chiro Inositol Supplement for Women | Fertility Supplements for… from Wholesome Story, with an estimated 51.4K units and ~$1.4M in revenue per month. Ranks change hourly, so check Amazon for the live list.

56 distinct brands have at least one product in the B8 (Inositol) top 100. The 10 biggest by estimated revenue account for about 63% of the list's estimated sales, and the top 3 for about 35%.

We estimate the top 100 b8 (inositol) products together bring in about $16M a month at list price, before returns, discounts and fees. Treat it as an order-of-magnitude figure. These are SuppRanked's modeled estimates from public Amazon Best Sellers ranks and list prices (October 15, 2026), not official Amazon sales data.

We read the public Amazon Best Sellers list daily, match each product to its brand, estimate monthly units from Amazon's “bought in past month” badges and sales-rank curves, and multiply by list price. Full details are on the methodology page.