Best-selling l-arginine brands on Amazon

By estimated revenue, Nature's Pure is the best-selling l-arginine brand on Amazon right now, at roughly $1.3M/mo from 2 products in the L-Arginine Best Sellers top 100 (best position #2). By estimated units, NOW Foods sells the most, about 49.4K 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 L-Arginine Best Sellers list was L-Arginine and L-Citrulline for Men, Nitric Oxide Support, 30 Servings | L Arginine 1000mg Capsules… from an unconfirmed brand, with an estimated 48.7K units and ~$1.2M in revenue per month. Ranks change hourly, so check Amazon for the live list.

44 distinct brands have at least one product in the L-Arginine top 100. The 10 biggest by estimated revenue account for about 66% of the list's estimated sales, and the top 3 for about 34%.

We estimate the top 100 l-arginine products together bring in about $13.4M 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.