spirulina
Spirulina is protein-dense blue-green algae with a superfood résumé and one sentence that matters more than the résumé: sourcing controls contamination.
Also appears on labels as: dried spirulina · spirulina algae · arthrospira platensis
What it is
Dried Arthrospira platensis — a cultivated cyanobacterium that is, by dry weight, more than half protein, with carotenoids and B-vitamins attached. At the gram-scale doses pet recipes use, it's a garnish with good press rather than a protein source.
Why it's in pet food
Immune and antioxidant positioning imported from human wellness. The honest footnote is quality control: poorly sourced algal products can carry microcystins (toxins from contaminating wild algae), which is why reputable makers buy assayed, cultivated spirulina — another invisible quality sentence.
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: no bonus, no deduction, no flag — the engine scores what's listed, and functional-claim garnishes don't move points. Nothing about spirulina at label doses is a concern from a reputable source; nothing about it should sell a food either.
Common questions
Answers come from this entry and the scoring rules above — reviewed before publish, like everything else on this page. For anything about your own pet, your vet knows best.
What does spirulina do in dog food?
It carries immune and antioxidant positioning imported from human wellness. Dried spirulina is, by dry weight, more than half protein with carotenoids and B-vitamins attached — but at the gram-scale doses pet recipes use, it's a garnish with good press rather than a protein source.
Is spirulina safe for pets?
From a reputable source, nothing about spirulina at label doses is a concern. The sentence that matters is sourcing: poorly sourced algal products can carry microcystins (toxins from contaminating wild algae), which is why reputable makers buy assayed, cultivated spirulina.
How does Bowlmark score spirulina?
Neutral: no bonus, no deduction, no flag — the engine scores what's listed, and functional-claim garnishes don't move points. Nothing about it should sell a food either.
Foods that list spirulina
No food on the shelf lists spirulina yet. Scan a bag that does and its label joins the catalog — versioned from the day it arrives.
Sources
Related ingredients
Further reading
Cite this page
Bowlmark. "Spirulina in pet food — what it is and how it scores." https://www.bowlmark.com/ingredient/spirulina
- Engine
- Methodology engine v1.1.0 · config 13c99e2f
- Verified
- Last verified August 22, 2026
No stored score to stamp yet — the engine and config above are the ones a scan runs today.