Research · Updated 2026-07-14
Fitness buyers ask ChatGPT for clean whey isolate, plant protein for vegans, and powders under $50. Models cite lab testing sites, Reddit fitness threads, and retailer Q&A — not influencer posts 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 13 completed anonymized specialist audits in Protein Supplements (no individual brands named): median LVI 38/100, middle 50% between 24 and 49. Figures refresh as audit volume grows; re-audit monthly to track movement.
Labdoor (certification) — Submit protein for testing Reddit r/Fitness (forum) — Answer clean protein recommendation threads Bodybuilding.com (editorial) — Earn editorial reviews
Publish ingredient-transparent copy on review aggregators, answer comparison prompts ("vs Optimum Nutrition") on third-party pages, and re-audit after major formula or flavor launches.
What buyer questions does ChatGPT answer for Protein Supplements?
Shoppers ask questions like: Best clean whey isolate without artificial sweeteners? Best plant protein for vegans? your brand vs {competitor} protein?. AskLLM audits your brand against these research-backed prompts — the same style buyers use before they purchase.
How does AI shortlist brands in Protein Supplements?
Fitness buyers ask ChatGPT for clean whey isolate, plant protein for vegans, and powders under $50. Models cite lab testing sites, Reddit fitness threads, and retailer Q&A — not influencer posts alone. This report summarizes AskLLM’s specialist methodology and the third-party surfaces that shape recommendations.
How do I measure LLM visibility for a protein 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.