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Optimum Nutrition in the Krillo Index

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

#13

of 86 stores measured

3/35

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 Optimum Nutrition

#11	nowfoods.com	8/35
#12	Nature Made	4/35
#13	Optimum Nutrition	3/35
#14	Legion	2/35
#15	Needed	2/35

See the full ranking for Supplements and health

What AI says about Optimum Nutrition

“Good for brands like Optimum Nutrition, Legion, Transparent Labs, Naked Nutrition, Dymatize, and Kaged.”

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

“OptimumNutrition.com, buy directly from the manufacturer.”

ChatGPT, asked: which American website do people recommend for buying creatine?

“MyProtein / Optimum Nutrition / Legion / similar direct sites, Often worthwhile for protein powder, creatine, and workout supplements when buying larger bags during sitewide sales.”

ChatGPT, asked: where in the US can I buy bulk supplements at a discount?

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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