Iams
ProActive Health Healthy Adult Original with Chicken
Leads on PetScored rating, Sensitivity Risk, Value
Buy on AmazonComparison · PetScored desk
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Iams
Leads on PetScored rating, Sensitivity Risk, Value
Buy on AmazonIams edges Purina ONE by 0.3 on composite.
+0.3 composite
Purina ONE
Leads on Nutrition Fit
Buy on AmazonOur read
Two of the highest-scoring dry cat foods we rate: Purina ONE posts a perfect nutrition score, but in our view Iams ProActive takes it overall on a lower sensitivity-risk profile and slightly better value. They tie on brand trust and ingredient clarity.
This verdict is our opinion under the PetScored rubric, not veterinary advice. The exact sub-scores are in the table below; each food’s source confidence and limitations stay on its own scorecard.
Iams
Excellent cost per calorie and a chicken-first formula with taurine declared. The official page did not expose a verbatim AAFCO statement; chicken by-product meal sits very high in the ingredient list.
Purina ONE
Strong value and solid cat-relevant nutrition, including feeding-trial substantiation and explicit taurine. The ingredient panel is busy and sensitivity-heavy, with chicken, beef fat, soy, corn, and legumes prominent.
Comparison scores use the same reconstructed score-event math as the product pages. Source confidence, unresolved gaps, recall context, and warning-letter limitations remain attached to each individual scorecard.