AI-recommended vitamin & supplement brands: rankings in 30 countries
Worldwide, AI assistants most often recommend Blackmores, Nature's Bounty and Centrum for vitamins. Blackmores is named by 5 of 5 assistants.
What the data says
Blackmores is the vitamin & supplement brand AI assistants recommend most worldwide, taking 5.8% of all recommendation points across 5 assistants. Nature's Bounty follows with 5.7% and Centrum is third with 5.2%.
The top spot is close: only 0.1 points separate Blackmores and Nature's Bounty, so a small change in how either brand is described online could flip the order.
Gemini puts Blackmores first, while ChatGPT favours Solgar, Claude favours Nature's Bounty, DeepSeek favours Kirkland and Grok favours Centrum.
The top five brands hold 26% of recommendations out of 874 brands named in total, leaving room for challengers to break into AI shortlists.
| # | Brand | Owner | AI share | ChatGPT | Claude | DeepSeek | Gemini | Grok |
|---|---|---|---|---|---|---|---|---|
| 1 | Blackmores | Blackmores | 5.8% | 1498 | 1864 | 1573 | 1048 | 2770 |
| 2 | Nature's Bounty | Nestlé | 5.7% | 132 | 3397 | 1066 | 666 | 3389 |
| 3 | Centrum | Haleon | 5.2% | 1815 | 750 | 481 | 652 | 4227 |
| 4 | Solgar | Nestlé | 5.1% | 2020 | 2173 | 1896 | 533 | 1056 |
| 5 | Swisse | H&H Group | 3.9% | 924 | 2774 | 535 | 882 | 764 |
| 6 | Ensure | Abbott | 2.6% | 945 | 630 | 877 | 646 | 850 |
| 7 | Kirkland | Costco | 2.2% | 161 | 256 | 2312 | 551 | 76 |
| 8 | Nature Made | Otsuka Pharmaceutical | 2.2% | 1239 | 464 | 102 | 1020 | 482 |
| 9 | GNC | GNC | 1.9% | 395 | 716 | 947 | 212 | 583 |
| 10 | Arkopharma | Arkopharma | 1.9% | 407 | 325 | 582 | 184 | 1350 |
| 11 | DHC | DHC Corporation | 1.5% | 715 | 329 | 566 | 396 | 325 |
| 12 | Doppelherz | Queisser Pharma | 1.5% | 557 | 320 | 824 | 270 | 350 |
| 13 | Herbalife | Herbalife | 1.3% | 676 | 642 | 476 | 104 | 8 |
| 14 | Nature’s Bounty | Nestlé | 1.2% | 687 | – | 1158 | – | – |
| 15 | Caltrate | Haleon | 1.1% | 730 | 32 | 164 | 150 | 599 |
| 16 | Hydroxycut | Iovate Health Sciences | 1.1% | 150 | 364 | – | 565 | 579 |
| 17 | Nature's Way | Schwabe Group | 1% | – | 691 | 108 | 48 | 744 |
| 18 | Sundown | Nestlé | 0.9% | – | – | 1443 | – | – |
| 19 | Optimum Nutrition | Glanbia | 0.9% | 220 | 300 | 12 | 325 | 513 |
| 20 | Supradyn | Bayer | 0.9% | 173 | 20 | 302 | 141 | 657 |
Questions about AI vitamin & supplement recommendations
- Which vitamin & supplement brand does ChatGPT recommend most?
- ChatGPT recommends Solgar most often for vitamin & supplement. Across all assistants, Blackmores leads with 5.8% of recommendations.
- Which vitamin & supplement brand is improving fastest?
- Ensure has the strongest momentum among challengers: AI names it first in 92 of 126 answers where it appears, while holding 2.6% share. This is the first Q4 2026 reading; change over time will be shown from the next update.
- How is the ranking calculated?
- We ask each AI assistant the questions shoppers ask in each category and market, record the top five brands it names, and give 35, 25, 20, 12 and 8 points for positions one to five. Share is a brand's points divided by all points awarded.
Vitamins: AI rankings by country
Covers: Bone & Joint Supplements, Brain & Eye Supplements, Detox Supplements, Fat Burning Supplements, Hair Supplements, Heart Supplements, Mineral Supplements, Multivitamins, Nutritional Supplements, Skin Supplements.
Method: each AI assistant is asked the shopper questions for every segment in the category and market; the top five brands named score 35, 25, 20, 12 and 8 points. Share is a brand's points divided by all points awarded. Rankings reflect AI answers, not sales.
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