Which vitamin & supplement brands do AI assistants recommend in South Korea? Q4 2026
In South Korea, AI assistants most often recommend Blackmores, CJ and Centrum for vitamins. Blackmores is named by 2 of 5 assistants.
What the data says
Blackmores is the vitamin & supplement brand AI assistants recommend most in South Korea, taking 7.9% of all recommendation points across 5 assistants. CJ follows with 7.8% and Centrum is third with 6.1%.
The top spot is close: only 0.1 points separate Blackmores and CJ, so a small change in how either brand is described online could flip the order.
Grok puts Blackmores first, while ChatGPT favours CJ, Claude favours Amorepacific, DeepSeek favours Nature's Bounty and Gemini favours Chong Kun Dang Health.
The top five brands hold 32% of recommendations out of 102 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 | 7.9% | 76 | – | – | – | 320 |
| 2 | CJ | CJ Group | 7.8% | 295 | – | – | 93 | – |
| 3 | Centrum | Haleon | 6.1% | 75 | – | 20 | 12 | 197 |
| 4 | Nature's Bounty | Nestlé | 5.5% | – | – | 273 | – | – |
| 5 | Nature Made | Otsuka Pharmaceutical | 4.4% | – | 40 | – | – | 178 |
| 6 | BY-HEALTH | BY-HEALTH | 3.9% | – | – | 194 | – | – |
| 7 | InnerB | CJ Wellcare | 3.7% | 115 | – | 33 | 35 | – |
| 8 | Youtheory | Jamieson Wellness | 3.4% | – | – | 172 | – | – |
| 9 | GNC | GNC | 3% | – | – | 8 | 89 | 53 |
| 10 | Swisse | H&H Group | 2.9% | 16 | – | – | – | 129 |
| 11 | Amorepacific | Amorepacific | 2.6% | 77 | 55 | – | – | – |
| 12 | Chong Kun Dang | Chong Kun Dang | 2.4% | 120 | – | – | – | – |
| 13 | Ensure | Abbott | 2.3% | 35 | 35 | 12 | – | 35 |
| 14 | Chong Kun Dang Health | Chong Kun Dang | 2.1% | – | – | – | 107 | – |
| 15 | Herbalife | Herbalife | 2% | 20 | – | 70 | 8 | – |
| 16 | Hanmi | Hanmi Pharmaceutical | 1.8% | 92 | – | – | – | – |
| 17 | VBene | VBene Korea | 1.4% | – | – | 68 | – | – |
| 18 | NutriOne | Nutrione | 1.3% | – | – | – | 65 | – |
| 19 | CheongKwanJang | Korea Ginseng Corp | 1.1% | – | – | – | 55 | – |
| 20 | Atomy | Atomy | 1% | – | 50 | – | – | – |
Questions about AI vitamin & supplement recommendations
- Which vitamin & supplement brand does ChatGPT recommend most in South Korea?
- ChatGPT recommends CJ most often for vitamin & supplement in South Korea. Across all assistants, Blackmores leads with 7.9% of recommendations.
- Which vitamin & supplement brand is improving fastest in South Korea?
- Nature's Bounty has the strongest momentum among challengers: AI names it first in 7 of 9 answers where it appears, while holding 5.5% 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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