Aufraise, Augentrostkraut, Casse-Lunettes, Eufrasia, Euphraise, Euphraise Officinale, Euphraise de Rostkov, Euphrasia, Euphraisia Eye Bright, Euphrasia officinalis, Euphrasia rostkoviana, Euphrasia stricta, Euphrasiae Herba, Eye Bright, Herbe d'Euphraise, Luminet.


Overview Information

Eyebright is a plant. The parts that grow above the ground are used to make medicine.

Eyebright is taken by mouth for swelling (inflammation) of the nasal cavity and sinuses (rhinosinusitis), allergies, hay fever, and many other conditions, but there is no good scientific evidence to support these uses.

Despite serious risk of infection, some people apply eyebright directly to the eye for conjunctivitis, eyelid swelling (blepharitis), and eye fatigue.

In foods, eyebright is used as a flavoring ingredient.

How does it work?

The chemicals in eyebright might act as astringents and kill bacteria.


Uses & Effectiveness?

Insufficient Evidence for

  • Pink eye (conjunctivitis). Early research shows that about 82% of people with pink eye who use eyebright eye drops have symptoms resolve within 2 weeks. But pink eye usually resolves on its own within 2 weeks. So, it's unclear if eyebright has added benefit.
  • Allergies.
  • Colds.
  • Coughs.
  • Earaches.
  • Headache.
  • Swelling (inflammation) of the nasal cavity and sinuses (rhinosinusitis).
  • Other conditions.
More evidence is needed to rate the effectiveness of eyebright for these uses.

Side Effects

Side Effects & Safety

When taken by mouth: Eyebright is LIKELY SAFE when taken in the amounts found in foods. But there isn't enough reliable information to know if eyebright is safe when taken in amounts found in medicines. It might cause confusion, headache, nausea, constipation, cough, trouble breathing, trouble sleeping (insomnia), and other side effects.

When applied into the eye: Eyebright is POSSIBLY UNSAFE. It can be contaminated and cause eye infections. It might also cause tearing, itching, redness, vision problems, and other side effects.

Special Precautions & Warnings:

Pregnancy and breast-feeding: There isn't enough reliable information to know if eyebright is safe to use when pregnant or breastfeeding. Stay on the safe side and avoid use.

Diabetes: Eyebright might lower blood sugar in some people. Watch for signs of low blood sugar (hypoglycemia) and monitor your blood sugar carefully if you have diabetes and use eyebright.

Surgery: Eyebright might lower blood sugar in some people. In theory, eyebright might interfere with blood sugar control during and after surgical procedures. Stop using eyebright at least 2 weeks before a scheduled surgery.



We currently have no information for EYEBRIGHT Interactions.



The appropriate dose of eyebright depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for eyebright. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

View References


  • Chang, I. M. Liver-protective activities of aucubin derived from traditional oriental medicine. Res Commun Mol Pathol Pharmacol 1998;102(2):189-204. View abstract.
  • Chang, I. M., Ryu, J. C., Park, Y. C., Yun, H. S., and Yang, K. H. Protective activities of aucubin against carbon tetrachloride-induced liver damage in mice. Drug Chem Toxicol. 1983;6(5):443-453. View abstract.
  • Ersoz, T., Berkman, M. Z., Tasdemir, D., Ireland, C. M., and Calis, I. An iridoid glucoside from Euphrasia pectinata. J Nat Prod 2000;63(10):1449-1450. View abstract.
  • Lee, D. H., Cho, I. G., Park, M. S., Kim, K. N., Chang, I. M., and Mar, W. Studies on the possible mechanisms of protective activity against alpha- amanitin poisoning by aucubin. Arch Pharm Res 2001;24(1):55-63. View abstract.
  • Mokkapatti R. An experimental double-blind study to evaluate the use of Euphrasia in preventing conjunctivitis. Brit Homoeopath J 1992;1(81):22-24.
  • Porchezhian, E., Ansari, S. H., and Shreedharan, N. K. Antihyperglycemic activity of Euphrasia officinale leaves. Fitoterapia 2000;71(5):522-526. View abstract.
  • Recio, M. C., Giner, R. M., Manez, S., and Rios, J. L. Structural considerations on the iridoids as anti-inflammatory agents. Planta Med 1994;60(3):232-234. View abstract.
  • Rombouts JE and Links J. The chemical nature of the antibacterial substance present in Aucuba japonica Thunbg. Experientia 1956;12(2):78-80.
  • Salama O and Sticher O. Iridoid glucosides from Euphrasia rostkoviana. Part 4. Glycosides from Euphrasia species. Planta Med 1983;47:90-94.
  • Stoss, M., Michels, C., Peter, E., Beutke, R., and Gorter, R. W. Prospective cohort trial of Euphrasia single-dose eye drops in conjunctivitis. J Altern.Complement Med 2000;6(6):499-508. View abstract.
  • Teotia, S. and Singh, M. Hypoglycemic effect of Prunus amygdalus seeds in albino rabbits. Indian J Exp.Biol. 1997;35(3):295-296. View abstract.
  • Ulubelen, A., Topcu, G., Eris, C., Sonmez, U., Kartal, M., Kurucu, S., and Bozok-Johansson, C. Terpenoids from Salvia sclarea. Phytochemistry 1994;36(4):971-974. View abstract.
  • Bermejo, Benito P., Diaz Lanza, A. M., Silvan Sen, A. M., De Santos, Galindez J., Fernandez, Matellano L., Sanz, Gomez A., and Abad Martinez, M. J. Effects of some iridoids from plant origin on arachidonic acid metabolism in cellular systems. Planta Med 2000;66(4):324-328. View abstract.
  • Chang I. Antiviral activity of Aucubin against Hepatitis B virus replication. Phytother Res 1997;11(3):189-192.

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CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.

This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version.
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