Eyebright
Euphrasia officinalis
Upper respiratory and ocular mucous membrane tonic, traditionally used for allergic conjunctivitis, runny eyes, sneezing, and sinus congestion in dogs, cats, and horses.
Consult Your Veterinarian First
This information is for educational purposes only. Always consult a qualified veterinarian before using herbal remedies for your pet — especially if they are on medication, pregnant, or have existing health conditions.
Species Safety
An herb safe for one species may be toxic to another.
Dogs
SafeDuration: moderate term
Cats
SafeDuration: short term
Horses
SafeDuration: moderate term
Rabbits
SafeDuration: short term
Birds
SafeDuration: short term
Guinea Pigs
SafeDuration: short term
Dosing Guide
General guidance only — always consult your veterinarian.
| Species | Form | Dose | Frequency | Notes |
|---|---|---|---|---|
| Dogs | glycerin tincture | 0.25-0.5 drops /lb | three times daily | During allergy flares; reduce frequency once resolved. |
| Cats | hydrosol | 1-2 drops | twice daily | Applied as eye wash; avoid preservative-containing products. |
| Horses | dried herb | 10-20 grams | twice daily | Top-dress during allergy season. |
Active Compounds
Compounds marked Cat Unsafe (phenols and many terpenes) cannot be metabolized by feline livers.
Safety Warnings
Essential Oil Form
Euphrasia essential oil is not commercially available and should not be attempted; use hydrosol for topical eye applications.
Quick Info
Plant Family
Orobanchaceae
Parts Used
whole plant, leaf, flower, stem
Available Forms
dried herb, glycerin tincture, alcohol tincture, tea, hydrosol
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