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Thorne in the Krillo Index

When shoppers in the United States ask ChatGPT and Gemini where to buy supplements and health, is Thorne named? This is the answer from our latest monthly measurement, October 2026.

of 86 stores measured

20/35

buying questions where AI names it; the category median is 0

questions where AI recommends it outright

Measured with ChatGPT and Gemini, the same questions for every store in this category, asked in the language of the market. Read how we measure.

Around Thorne

#1	Thorne	20/35
#2	The Vitamin Shoppe	23/35
#3	Life Extension	10/35

See the full ranking for Supplements and health

What AI says about Thorne

In the 32 answers that name Thorne, AI mentions: quality (11x), premium (6x), trusted (5x), wide range (3x), service and advice (1x).

“| | Best for clean-label / specialty options | Thorne, Legion, Transparent Labs, Naked Nutrition, Momentous (direct) | Better fit if you want third-party testing, minimal ingredients, vegan protein, lactose-free options, or...”

ChatGPT, asked: where is the best place to buy protein powder online in the US?

“Thorne: The gold standard for NSF-Certified for Sport proteins (ideal for tested athletes).”

Gemini, asked: where is the best place to buy protein powder online in the US?

“…options: - Thorne.com, high-quality, practitioner-oriented supplements; often more expensive.”

ChatGPT, asked: which American website should I use to buy vitamins and supplements?

Quoted word for word from the answers in our measurement. What AI says about your store decides which buying questions it names you for.

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