Eyebright
(Euphrasia officinalis)
Botanical Information
A small perennial semiparastitic plant of meadows in the Snapdragon family with opposite leaves and small white to pale lilac flowers.
Working with Eyebright
Part(s) Used
Leaf, Flowers
Herb Forms
Tincture, capsule, homeopathic tablet, bulk herb.
Christopher Hobbs:
“Eyebright is a mildly decongesting, astringent herb which reduces inflammation. It is useful for red or inflamed eyes and for conjunctivitis and styes, taken internally and applied externally. As a mild decongestant, it is also excellent to stop excessive runny discharges both in hayfever and other sinus problems.
Eyebright has a taste of BITTER and a temperature of COOL.”
Historical Uses
Eyebright has a long history in traditional European herbal medicine, primarily used to treat eye-related ailments. The herb’s astringent and anti-inflammatory properties made it popular for treating conjunctivitis, eye strain, and other minor eye conditions. It was also occasionally used for respiratory issues, such as sinus infections and colds.
Modern Clinical Uses by Herbalists and Naturopaths
Today, herbalists and naturopaths use eyebright for a range of eye conditions, including conjunctivitis, blepharitis (inflammation of the eyelids), and eye irritation. It is also used to address sinus infections, colds, and seasonal allergies, primarily due to its anti-inflammatory and mild decongestant properties.
Chemistry and Pharmacology
Eyebright contains various bioactive compounds, including flavonoids (like quercetin and luteolin), iridoid glycosides (e.g., aucubin), tannins, and phenolic acids. Flavonoids and iridoid glycosides are thought to contribute to eyebright’s anti-inflammatory, antioxidant, and antimicrobial effects, while tannins give it astringent properties. However, its pharmacological effects in humans are not extensively researched, and mechanisms are largely inferred from traditional uses and laboratory studies.
Dosages
Eyebright is available as a tincture, capsule, tea, and eye wash. Typical oral dosages for tinctures range from 1-2 mL, taken 2-3 times daily. For teas, 1-2 grams of dried herb steeped in water is common.
Clinical Trials
Clinical research on eyebright is limited. Small studies and case reports suggest that it may help relieve mild to moderate eye discomfort or eye strain, particularly when combined with other herbs. However, there is insufficient evidence from well-designed clinical trials to substantiate its efficacy and safety for eye conditions or other uses, warranting further investigation.
Summary
Eyebright remains a popular herb in traditional and alternative medicine for eye health and respiratory issues, though it lacks strong scientific evidence from clinical trials. Its active compounds suggest anti-inflammatory and antioxidant effects, which may contribute to traditional applications. Practitioners typically recommend it with caution, especially for eye application, as further studies are needed to confirm its safety and efficacy.
Generated by ChatGPT; edited by Christopher Hobbs
Cautions
Eyebright is generally considered safe when used topically or consumed in small amounts, although large doses can irritate the gastrointestinal tract. Potential side effects may include nausea or skin reactions when used in high doses. Pregnant or breastfeeding individuals and those with serious eye conditions should consult a healthcare provider before using it, especially as an eye drop, due to the risk of contamination or irritation. Eye washes or eye drops containing eyebright should only be used under professional guidance to prevent infection.
Conditions treated with Eyebright
Condition
Treatment Support
Application
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Condition
Treatment Support
anti-inflammatory, astringent
Application
tea internally and as a wash externally
Condition
Treatment Support
antibacterial
Application
wash externally, tea internally
Condition
Treatment Support
antihistamine, decongestant
Application
tincture, capsules, tea
Dosages
Tincture
1-2 ml, taken 2-3 times daily
Infusion
1-2 grams of dried herb steeped in water is common
The information given here is designed to help you make informed choices about your health. The information is drawn from numerous sources—both traditional medicine practice, from the clinical experience of many herbalists currently practicing, and supported by decades of scientific research from the author. The research most consulted includes human clinical trials that help to determine the most effective and safe herbs for various needs, the best doses, and types of preparations.
The information offered in this database is not intended as a substitute for any that may have been prescribed by your health practitioner or physician.