Which vitamin & supplement brands do AI assistants recommend in Vietnam? Q4 2026
In Vietnam, AI assistants most often recommend Blackmores, Kirkland 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 in Vietnam, taking 24.8% of all recommendation points across 5 assistants. Kirkland follows with 7.3% and Centrum is third with 5.9%.
Blackmores's lead over Kirkland is 17.5 points, a clear advantage in how AI shortlists the category.
ChatGPT, Claude, Gemini and Grok put Blackmores first, while DeepSeek favours Nature's Bounty.
The top five brands hold 49% of recommendations out of 75 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 | 24.8% | 253 | 290 | 210 | 168 | 320 |
| 2 | Kirkland | Costco | 7.3% | 89 | 20 | 202 | 47 | 8 |
| 3 | Centrum | Haleon | 5.9% | 75 | 50 | 12 | – | 159 |
| 4 | DHC | DHC Corporation | 5.5% | 110 | – | 20 | 145 | – |
| 5 | Nature's Way | Schwabe Group | 5.4% | – | 98 | – | 20 | 151 |
| 6 | Nature's Bounty | Nestlé | 5.1% | – | – | 232 | – | 25 |
| 7 | Ensure | Abbott | 3.5% | 35 | 35 | 35 | 35 | 35 |
| 8 | Swisse | H&H Group | 3.5% | 36 | 114 | – | 25 | – |
| 9 | Herbalife | Herbalife | 3.1% | 55 | 47 | 33 | 20 | – |
| 10 | Nature Made | Otsuka Pharmaceutical | 3.1% | 82 | 72 | – | – | – |
| 11 | Doppelherz | Queisser Pharma | 2.2% | 52 | – | 56 | – | – |
| 12 | Traphaco | Traphaco JSC | 2.1% | – | – | – | – | 104 |
| 13 | Puritan's Pride | Nestlé | 1.5% | – | – | 48 | – | 28 |
| 14 | Nature’s Way | Schwabe Group | 1.4% | 70 | – | – | – | – |
| 15 | Orihiro | Orihiro | 1.1% | – | 43 | – | 12 | – |
| 16 | Osteocare | Vitabiotics | 0.9% | – | 32 | – | 12 | – |
| 17 | MuscleTech | Iovate Health Sciences | 0.8% | – | 8 | 20 | 12 | – |
| 18 | Healthy Care | Nature’s Care | 0.8% | – | – | – | 40 | – |
| 19 | Hydroxycut | Iovate Health Sciences | 0.7% | – | 12 | – | – | 25 |
| 20 | Nature’s Bounty | Nestlé | 0.7% | 37 | – | – | – | – |
Questions about AI vitamin & supplement recommendations
- Which vitamin & supplement brand does ChatGPT recommend most in Vietnam?
- ChatGPT recommends Blackmores most often for vitamin & supplement in Vietnam. Across all assistants, Blackmores leads with 24.8% of recommendations.
- Which vitamin & supplement brand is improving fastest in Vietnam?
- 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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