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Iams vs Purina ONE

Iams is made by Iams Company (owned by Mars, Incorporated), and Purina ONE is made by Nestlé Purina PetCare (owned by Nestlé S.A.), and both make food for cats and dogs. On KibbleLab, Iams averages 9.1 out of 10 across its scored foods, compared with 9.0 for Purina ONE. Iams's maker dates to 1946, while Purina ONE's launched in 2001.

Iams and Purina ONE compared

Iams Purina ONE
Manufacturer Iams Company Nestlé Purina PetCare
Parent company Mars, Incorporated Nestlé S.A.
Founded 1946 2001
Headquarters Mason, Ohio, United States St. Louis, Missouri, USA
Manufacturing Whether a brand makes its own food in-house or has it produced by an outside contract manufacturer or co-packer.
In-house In-house
Made in United States United States
Manufacturing region Ohio Missouri
Products listed 48 69
Serves Cats & dogs Cats & dogs
Price tier A relative price guide, from $ (most affordable) to $$$$$ (most premium), based on the brand's typical retail cost.
$$$ $$$
WSAVA guidelines The World Small Animal Veterinary Association (WSAVA) publishes criteria for evaluating a manufacturer: qualified nutritionists on staff, feeding trials, and published research. It does not certify or endorse brands.
Yes Yes
PSC accredited The Pet Sustainability Coalition is a nonprofit that accredits pet companies on their environmental and social impact, through third-party verification. It reflects sustainability practices, not food quality.
No No
Score The average KibbleLab score across this brand's scored foods, on a 0 to 10 scale. Foods are scored on published veterinary science. How scoring works .
9.1 (avg of 48) 9.0 (avg of 69)
Recalls on record We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.
None None
Where to buy
Amazon
Amazon

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Iams vs Purina ONE: how they compare

Scores

Iams scores higher on KibbleLab, averaging 9.1 out of 10 across 48 scored foods, compared with 9.0 across 69 for Purina ONE. Scores apply the same criteria-based rubric to every food, drawn from published veterinary science.

Who makes them

Iams is made by Iams Company, owned by Mars, Incorporated, based in Mason, Ohio, United States, founded in 1946. Purina ONE is made by Nestlé Purina PetCare, owned by Nestlé S.A., based in St. Louis, Missouri, USA, founded in 2001.

Standards and range

Both meet WSAVA's published manufacturer criteria. KibbleLab lists 48 Iams foods and 69 Purina ONE foods.

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Common Questions

Which scores higher on KibbleLab, Iams or Purina ONE?

Iams scores higher: it averages 9.1 out of 10 across 48 scored foods, compared with 9.0 for Purina ONE. Scores reflect published veterinary science.

Who makes Iams and Purina ONE?

Iams is made by Iams Company, which is owned by Mars, Incorporated. Purina ONE is made by Nestlé Purina PetCare, which is owned by Nestlé S.A.

Which brand has more products on KibbleLab?

Purina ONE has 69 products in the KibbleLab database, compared with 48 for Iams.

Where is each brand based?

Iams is based in Mason, Ohio, United States. Purina ONE is based in St. Louis, Missouri, USA.

Do Iams and Purina ONE meet WSAVA criteria?

Both Iams and Purina ONE meet WSAVA's published criteria for evaluating a manufacturer. WSAVA publishes criteria; it does not certify or endorse brands.

Have Iams or Purina ONE been recalled?

Neither Iams nor Purina ONE has a recall on record in the KibbleLab database. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.

See the full profiles: Iams and Purina ONE .

More comparisons

KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.

This is a neutral, factual comparison, not a ranking or an endorsement of either brand. KibbleLab may earn affiliate commissions through links. No one can pay for placement or a higher score.

Brand and manufacturer details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing. Recall data is compiled from public FDA filings, and a filing may name the parent company rather than the brand. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.

KibbleLab scores and commentary are editorial opinions based on published data. Represent one of these brands? Request a correction. Anyone else can email us. See our Terms.