Lutein

Xanthophyll

Mechanism

Lutein is a xanthophyll carotenoid that accumulates in the eye (macula and retina), where it is discussed as a blue-light filter and antioxidant, and it belongs to the non-provitamin-A carotenoids. In human nutrition it is studied predominantly in the context of eye health; in other species (among others the dog) immunomodulating effects have been described. For the horse the endpoint evidence is thin: robust equine studies on clinical outcomes are largely lacking, so its use is derived predominantly from species extrapolation and empirical knowledge.

Cautions

· Equine endpoint evidence thin — effect derived predominantly from other species
· As a carotenoid, coordinate with other carotenoid sources in the ration

Sources

Mrowicka et al. 2022Mrowicka et al. (Nutrients) — Review Lutein/Zeaxanthin in Netzhaut und Auge (Human)

Kim et al. 2000Kim et al. (Vet Immunol Immunopathol) — Lutein und Immunantwort beim Hund (nicht equin)

Equiterna Score

59/100

solid

Science4.5/10

Practical experience6/10

Safety7.8/10

Overall score scale

high overall75–100solid55–74limited0–54

How the Equiterna Score is built

The Equiterna Score combines three dimensions into a value of 0-100: science (40%), practical experience (30%) and safety (30%). It is transparently derived from evidence level, attributed sources (PubMed/journals), legal classification and cautions. The FEI doping status is shown separately as a competition-law note and does not enter the score. Commissions and vendor relationships have no influence on the score. In addition, the editorial safety rating caps the result: it limits the safety dimension and the overall tier (orange: at most solid). For entries rated red, no score is calculated at all. The rating never raises anything — a green rating does not lift a calculated value.

An editorial assessment of the evidence and safety situation — not a healing claim and not an individual recommendation. It does not replace veterinary advice.

Dosageproduct-specific; equine dose studies lacking — observe manufacturer instructions

AMG statusComplementary feed

FEI statusNot listed

SafetyVery safe

Evidenceemerging

Usage note

This content is for information and education. It does not replace veterinary diagnosis or treatment. If your horse shows signs of illness, consult a veterinarian.

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Xenophon · On Horsemanship (c. 365 BC)

Equiterna is an intermediary platform for equine knowledge, marketplace and tools — not a veterinary-medicines dealer, veterinary practice or pharmacy. Compound information is study-attributed and free of healing claims. Legal framework: Regulation (EU) 2019/6 / TAMG (DE/AT), Feed Regulation (EC) 767/2009, FEI Prohibited Substances List, HWG.