SuppRankedWhy
Why sells an estimated 3.5K units a month on Amazon across 1 Best Sellers product, worth roughly $72K/mo in gross revenue at list price (a modeled estimate, not Amazon data). That puts it #604 of 935 tracked supplement brands by SuppRanked score and #612 by estimated revenue. It peaks at #91 in Amazon's Vitamin D3 & K2 Best Sellers list. Its biggest niche is Vitamin D3 & K2, where it is #61 by estimated revenue with about 0% of that top 100's est. sales. The top seller is Why Not Natural Organic Vitamin D3 K2 (MK-7) Liquid Drops, 5000 IU of… at ~$72K/mo est.
Categories Ranked in 1 Best Sellers list · best position shown
Why products on Amazon Best Sellers Sorted by est. revenue/mo
| Product | Est. revenue/mo |
|---|---|
| Why Not Natural Organic Vitamin D3 K2 (MK-7) Liquid Drops, 5000 IU of sublingual D3 with… ASIN B09KVLBB78 · #91 Vitamin D3 & K2 · 3.5K units | $72K |
Prices, ratings and ranks as seen on October 15, 2026. Links go to the product on Amazon.com.
Competitors & comparisons
Top rivals in Vitamin D3 & K2
- Cocó · $76K/mo est.
- Zahler · $75K/mo est.
- Bluebonnet · $74K/mo est.
- Horbäach · $67K/mo est.
- JME · $66K/mo est.
- Garden of Life · $59K/mo est.
Brands ranked near Why
- #600 V Shred Test · $85K/mo est.
- #601 SOLO · $91K/mo est.
- #602 ALLMAX · $134K/mo est.
- #603 Apigenin · $68K/mo est.
- #605 DailyNutra · $93K/mo est.
- #606 Opportuniteas · $105K/mo est.
- #607 MAGNA · $76K/mo est.
- #608 VEGEPOWER · $55K/mo est.
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The score (0–100) blends estimated monthly units (60%), category rank visibility (30%) and breadth across categories (10%). Est. revenue/mo is estimated units × list price, summed across the brand's ranked products. Methodology