Optimum Nutrition is the world's #1 sports-nutrition brand. Ask an AI engine for the "best protein powder" — you get Optimum Nutrition. Add one word to the query — "clean," "transparent," "no artificial" — and the engine hands the answer to a brand a fraction of its size.
That is the finding my team at 5W AI Communications just published in the Sports Nutrition & Protein AI Visibility Index 2026. We ran 60+ consumer prompts across ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews. We tracked which brands the engines named, how often, and how the answer shifted the moment a qualifier entered the query.
The finding is not that Optimum Nutrition is losing. It is not. Optimum Nutrition owns the default. Three decades of shelf presence, category recognition, and editorial coverage built exactly the kind of incumbency that AI engines reward on the broad, unqualified prompt.
The finding is that the broad, unqualified prompt is losing share to the qualified one.
"Best protein powder" returns Optimum Nutrition. "Cleanest protein powder" returns Transparent Labs. "Best protein shake" returns Premier Protein and Fairlife Core Power — no powder brand at all. "Best third-party-tested creatine" returns Momentous. Same category. Four different winners. And the buyer only needs to add one word to switch which one they see.
That is a structural shift. Not a marketing headline. A structural shift in how a $30 billion category is being surfaced, evaluated, and shortlisted.
Here is what the incumbents missed.
They spent the last decade optimizing for shelf, for retail relationships, for TV, for social. All of that still matters. None of it teaches an AI engine to name you when the query is "cleanest." An AI engine names the brand that published the formula. The dosing rationale. The third-party lab report. The certification. The primary-source document a retrieval system can read, verify, and cite.
Transparent Labs did that. Legion did that. Momentous anchored itself to NSF Certified for Sport and now owns "third-party tested" as a query. Premier Protein and Fairlife Core Power built the editorial and review record around the ready-to-drink format, and now own a citation surface the powder tubs cannot reach.
None of those brands out-sold Optimum Nutrition. All of them out-cited Optimum Nutrition on the queries they picked.
This is what I mean when I say Citation Share is the new market share.
Market share tells you what a consumer bought last quarter. Citation Share tells you which brand the AI engine is about to recommend to the consumer this quarter — before the buy happens, before the aisle, before Amazon. It is the single earliest measurable signal in the funnel. And in performance nutrition, it is already re-sorting a category the incumbents thought they owned.
I have said this to every category we have researched. Beauty. Supplements. Restaurants. Grocery. Functional beverages. The pattern is the same. The buyer no longer starts with a brand. The buyer starts with a question — and an AI engine writes the answer before the buyer sees a shelf.
For decades I sold public relations by explaining what a press hit would do for a brand. That work still matters — the tier-1 outlet is still a retrieval anchor the engines trust. But the discipline has grown. Earned media. Digital. Influencer. Paid. And now Generative Engine Optimization — GEO — the discipline of writing, publishing, and structuring content so an AI engine can retrieve it, verify it, and repeat it inside the answer a buyer sees.
That is the entire 5W thesis. The AI Communications Firm. One operating system: earned + digital + influencer + paid + GEO — all aimed at growing the brand's Citation Share inside the answer.
For sports-nutrition operators, the playbook is not complicated. It is uncomfortable.
Publish the full formula. Publish the dosing logic. Publish the third-party lab report. Pursue the certification and put the credential in a structured, retrievable place. Earn the independent testing coverage. Build a presence in the format that is winning — ready-to-drink is its own citation surface, and the powder-only brand cedes it. Re-audit citation share every quarter, because certification cycles, reformulations, and testing coverage all reshape the answer.
The brands that will win the next decade of performance nutrition are the ones that treat their formula, their credential, and their transparency as retrieval assets — not as marketing lines.
Optimum Nutrition still wins the broad query. The question is how long "broad query" remains the dominant behavior. Every quarter more of the search moves toward the qualifier. Every quarter the incumbent that ignored disclosure loses another slice of the answer.
If you build a brand today and you are not being asked how often you appear inside ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews when the buyer types the question — you are being measured on the last decade's scoreboard.
The Index is here. Read it. Send it to your CMO. Then ask which qualifier you intend to own — because the day the buyer types it is already here.
Ronn Torossian is founder and chairman of 5W AI Communications, the AI Communications Firm. He is the publisher of Everything-PR and the author of two best-selling editions of For Immediate Release.