Best-selling Vitamin K1 brands on Amazon

By estimated revenue, Life Extension is the best-selling Vitamin K1 brand on Amazon right now, at roughly $1.2M/mo from 3 products in the Vitamin K1 Best Sellers top 100 (best position #2). By estimated units, Sports Research sells the most, about 51.4K 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 Vitamin K1 Best Sellers list was Sports Research® Vitamin K2 as MK-7 100mcg, 60 Count Plantgels™ | Supports Bone & Heart Health… from Sports Research, with an estimated 51.4K units and ~$923K in revenue per month. Ranks change hourly, so check Amazon for the live list.

58 distinct brands have at least one product in the Vitamin K1 top 100. The 10 biggest by estimated revenue account for about 52% of the list's estimated sales, and the top 3 for about 23%.

We estimate the top 100 Vitamin K1 products together bring in about $12.8M 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.