Which vitamin & supplement brands do AI assistants recommend in Thailand? Q4 2026
In Thailand, AI assistants most often recommend Blackmores, Mega We Care and Vistra for vitamins. Blackmores is named by 5 of 5 assistants.
What the data says
Blackmores is the vitamin & supplement brand AI assistants recommend most in Thailand, taking 26.7% of all recommendation points across 5 assistants. Mega We Care follows with 9.4% and Vistra is third with 8.9%.
Blackmores's lead over Mega We Care is 17.3 points, a clear advantage in how AI shortlists the category.
Every assistant tested (ChatGPT, Claude, DeepSeek, Gemini and Grok) puts Blackmores first.
The top five brands hold 56% of recommendations out of 61 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 | 26.7% | 237 | 315 | 250 | 215 | 320 |
| 2 | Mega We Care | Mega Lifesciences | 9.4% | 110 | – | – | 135 | 227 |
| 3 | Vistra | Mega Lifesciences | 8.9% | 166 | – | – | 165 | 116 |
| 4 | Centrum | Haleon | 6.7% | 91 | 50 | 25 | 25 | 142 |
| 5 | Kirkland | Costco | 3.9% | – | 16 | 170 | – | 8 |
| 6 | Nature's Bounty | Nestlé | 3.8% | – | – | 161 | 8 | 20 |
| 7 | Ensure | Abbott | 3.5% | 35 | 35 | 35 | 35 | 35 |
| 8 | Herbalife | Herbalife | 3.3% | 37 | 60 | 50 | 20 | – |
| 9 | Swisse | H&H Group | 2.8% | – | 142 | – | – | – |
| 10 | Donutt | Donutt Brand | 2.3% | 94 | – | – | 20 | – |
| 11 | DHC | DHC Corporation | 2.2% | 92 | – | – | 16 | – |
| 12 | Nature's Way | Schwabe Group | 1.9% | – | 77 | – | – | 20 |
| 13 | Caltrate | Haleon | 1.6% | 33 | – | 28 | 8 | 12 |
| 14 | Doppelherz | Queisser Pharma | 1.5% | – | – | 77 | – | – |
| 15 | Brand’s | Suntory | 1.5% | 28 | – | – | 47 | – |
| 16 | Amway | Amway | 1.5% | 28 | – | – | 45 | – |
| 17 | Nature Made | Otsuka Pharmaceutical | 1.4% | 16 | 52 | – | – | – |
| 18 | Verena | Independent | 1.1% | – | – | – | 55 | – |
| 19 | Puritan's Pride | Nestlé | 1% | – | – | 24 | 12 | 16 |
| 20 | Orihiro | Orihiro | 0.9% | – | 47 | – | – | – |
Questions about AI vitamin & supplement recommendations
- Which vitamin & supplement brand does ChatGPT recommend most in Thailand?
- ChatGPT recommends Blackmores most often for vitamin & supplement in Thailand. Across all assistants, Blackmores leads with 26.7% of recommendations.
- Which vitamin & supplement brand is improving fastest in Thailand?
- Ensure has the strongest momentum among challengers: AI names it first in 5 of 5 answers where it appears, while holding 3.5% 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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