Research · Updated 2026-07-14
Supplement buyers increasingly ask ChatGPT for third-party tested magnesium, multivitamins, and niche formulas before they click an ad. Models tend to cite independent testing sites, ingredient research hubs, and high-signal community threads — not brand homepages alone. This report summarizes AskLLM’s specialist methodology and the third-party surfaces that shape recommendations.
AskLLM runs research-backed buyer prompts across ChatGPT and Gemini — the same models shoppers use for product research. We score the AI Brand Visibility Index (LVI) from mention frequency, position, and consistency across prompts. Full disclosure: see our public methodology page. This research page does not publish individual brand names from customer audits.
Based on 17 completed anonymized specialist audits in Vitamins & Supplements (no individual brands named): median LVI 39/100, middle 50% between 24 and 46. Figures refresh as audit volume grows; re-audit monthly to track movement.
Examine.com (editorial) — Get cited in ingredient research roundups Labdoor (certification) — Submit product for third-party testing Reddit r/Supplements (forum) — Participate in buyer recommendation threads ConsumerLab (review) — Pursue independent testing coverage
Earn consistent problem–solution language on independent testing and research sites, align retail and PDP copy with how buyers ask questions in chat, and re-audit monthly.
What buyer questions does ChatGPT answer for Vitamins & Supplements?
Shoppers ask questions like: Best magnesium for sleep without melatonin? Third-party tested multivitamin for women over 50? Is your brand worth it?. AskLLM audits your brand against these research-backed prompts — the same style buyers use before they purchase.
How does AI shortlist brands in Vitamins & Supplements?
Supplement buyers increasingly ask ChatGPT for third-party tested magnesium, multivitamins, and niche formulas before they click an ad. Models tend to cite independent testing sites, ingredient research hubs, and high-signal community threads — not brand homepages alone. This report summarizes AskLLM’s specialist methodology and the third-party surfaces that shape recommendations.
How do I measure LLM visibility for a vitamins & supplements brand?
Run a free AskLLM specialist audit with category-native buyer prompts, name a competitor, and get your AI Brand Visibility Index (LVI) across ChatGPT and Gemini. Re-audit quarterly to track whether models cite you more often.