SuppRankedOne A Day vs Theralogix: Amazon sales compared
Estimated Amazon revenue, units and category ranks for both brands, side by side. Updated October 15, 2026.
On Amazon, One A Day brings in an estimated $2.8M/mo versus $1.7M/mo for Theralogix, about 61% more than its rival (modeled estimates, Oct 15, 2026). One A Day also sells more units (~139K vs ~21.9K a month) across 12 ranked products to 5. They meet in 1 Best Sellers list, and Theralogix out-sells One A Day in every one, despite the smaller overall total. One A Day has the higher average rating (4.57 vs 4.44).
Head to head
| Metric | One A Day | Theralogix |
|---|---|---|
| Est. revenue/mo | $2.8M | $1.7M |
| Est. units/mo | 139K | 21.9K |
| Overall rank (score) | #38 | #204 |
| Rank by est. revenue | #33 | #65 |
| SuppRanked score | 61.8 | 47.3 |
| Best-selling products | 12 | 5 |
| Categories ranked in | 4 | 2 |
| #1 category ranks | 0 | 0 |
| Avg rating | 4.57 | 4.44 |
| Total reviews | 195K | 8K |
| Gummy share | 17% | 0% |
Shared categories Est. revenue/mo in each Best Sellers top 100 · best position
| Category | One A Day | Theralogix |
|---|---|---|
| Prenatal Vitamins | $1.2M | $1.2M |
Top products
One A Day
Theralogix
FAQ
Which sells more on Amazon, One A Day or Theralogix?
By SuppRanked's estimates, One A Day sells more: about $2.8M/mo in Amazon revenue versus $1.7M/mo for Theralogix. These are SuppRanked's modeled estimates from public Amazon Best Sellers ranks and list prices (October 15, 2026), not official Amazon sales data.
Who sells more prenatal vitamins on Amazon, One A Day or Theralogix?
In the Prenatal Vitamins Best Sellers top 100, Theralogix leads with ~$1.2M/mo estimated, against ~$1.2M/mo for One A Day. Estimates only.