Which vitamin & supplement brands do AI assistants recommend in United States? Q4 2026
In United States, AI assistants most often recommend Nature Made, Centrum and Nature's Bounty for vitamins. Nature Made is named by 5 of 5 assistants.
What the data says
Nature Made (Otsuka Pharmaceutical) is the vitamin & supplement brand AI assistants recommend most in United States, taking 12.2% of all recommendation points across 5 assistants. Centrum follows with 7.6% and Nature's Bounty is third with 6.8%.
Nature Made's lead over Centrum is 4.6 points, a clear advantage in how AI shortlists the category.
ChatGPT, Gemini and Grok put Nature Made first, while Claude favours Nature's Bounty and DeepSeek favours Nature’s Bounty.
The top five brands hold 35% of recommendations out of 81 brands named in total, leaving room for challengers to break into AI shortlists.
| # | Brand | Owner | AI share | ChatGPT | Claude | DeepSeek | Gemini | Grok |
|---|---|---|---|---|---|---|---|---|
| 1 | Nature Made | Otsuka Pharmaceutical | 12.2% | 149 | 40 | 90 | 115 | 218 |
| 2 | Centrum | Haleon | 7.6% | 135 | 20 | 35 | 35 | 157 |
| 3 | Nature's Bounty | Nestlé | 6.8% | 48 | 280 | – | 12 | – |
| 4 | Kirkland | Costco | 4.9% | 20 | 90 | 97 | 37 | – |
| 5 | Nature’s Bounty | Nestlé | 3.4% | – | – | 170 | – | – |
| 6 | Nutrafol | Nutraceutical Wellness Inc. | 3.3% | 35 | 25 | 35 | 35 | 35 |
| 7 | Ensure | Abbott | 3.1% | 35 | 35 | 35 | 25 | 25 |
| 8 | Olly | Unilever | 2.9% | 45 | – | 57 | 20 | 24 |
| 9 | Hydroxycut | Iovate Health Sciences | 2.8% | 35 | 35 | – | 35 | 35 |
| 10 | Garden of Life | Nestlé | 2.7% | 20 | 20 | 56 | 8 | 32 |
| 11 | One A Day | Bayer | 2.6% | 25 | 25 | 25 | 20 | 33 |
| 12 | Now Foods | NOW Health Group | 2.3% | – | – | 85 | – | 32 |
| 13 | Prevagen | Quincy Bioscience | 2.2% | 35 | – | 20 | 20 | 35 |
| 14 | Optimum Nutrition | Glanbia | 1.8% | 20 | – | – | 35 | 35 |
| 15 | Orgain | Nestlé | 1.8% | 12 | 25 | 20 | 12 | 20 |
| 16 | GNC | GNC | 1.8% | 25 | 52 | – | 12 | – |
| 17 | Qunol | Quten Research Institute | 1.7% | 25 | – | 20 | 20 | 20 |
| 18 | Renew Life | Nestlé | 1.7% | 12 | – | 12 | 35 | 25 |
| 19 | Caltrate | Haleon | 1.6% | 12 | – | 20 | 25 | 25 |
| 20 | Viviscal | Church & Dwight | 1.6% | 25 | – | 8 | 25 | 20 |
Questions about AI vitamin & supplement recommendations
- Which vitamin & supplement brand does ChatGPT recommend most in United States?
- ChatGPT recommends Nature Made most often for vitamin & supplement in United States. Across all assistants, Nature Made leads with 12.2% of recommendations.
- Which vitamin & supplement brand is improving fastest in United States?
- Hydroxycut has the strongest momentum among challengers: AI names it first in 4 of 4 answers where it appears, while holding 2.8% 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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