zinc oxide
Zinc oxide is the budget zinc — skin and immune chemistry's mineral in its least absorbable form, with a household-hazard footnote from the medicine cabinet.
What it is
The inorganic oxide of zinc, an essential metal spent constantly on skin, coat, immune function, and hundreds of enzymes. Among supplement forms, oxide sits lowest on bioavailability — usable, cheap, and dosed with its limitations in mind.
Why it's in pet food
Meeting the zinc requirement at minimum cost. Plant-heavy recipes complicate matters: phytates in grains and legumes bind zinc, which is exactly the scenario where absorbable forms earn their premium.
How Bowlmark scores it
Scores are deterministic math over the printed label — the rules below apply to every product identically, and nothing estimates or fills in a blank.
Neutral — form choice is formulation chemistry the engine deliberately doesn't grade. The household footnote: zinc oxide diaper creams and sunscreens are a real dog-ingestion hazard (tube-chewing is a classic), and swallowed zinc hardware — coins, bolts — causes serious hemolytic toxicity. The label is fine; the bathroom is where zinc bites.
For dogs
A chewed tube of zinc cream or a swallowed metal object is vet-call territory — zinc toxicity injures red blood cells and shows up as weakness and dark urine days later.
Foods that list zinc oxide
Ranked by score where scores exist. Placement here is never sold.
Sources
Related ingredients
Further reading
Cite this page
Bowlmark. "Zinc oxide in pet food — what it is and how it scores." https://www.bowlmark.com/ingredient/zinc-oxide
- Engine
- Methodology engine v1.1.0 · config 13c99e2f
- Verified
- Last verified August 12, 2026
No stored score to stamp yet — the engine and config above are the ones a scan runs today.