Emadine eye drops (emedastine)

Uses:
Relieving the eye symptoms of hay fever (seasonal allergic conjunctivitis) in adults and children aged three years and older.

How does it work?
Emadine eye drops contain the active ingredient emedastine, which is a type of medicine called an antihistamine. It works by preventing the actions of histamine.
Histamine is a substance produced by the body as part of its defence mechanisms. It is stored in cells called mast cells, in almost all tissues of the body. When the body reacts to a foreign substance (known as an allergen, eg flower or grass pollen), the mast cells stimulated by the allergen release their stores of histamine.
The released histamine then binds to its receptors (H-1 receptors), causing a chain reaction that results in allergic symptoms. It causes an increase in blood flow to the area of the allergy, and the release of other chemicals that add to the allergic response. All this results in the symptoms of an allergic reaction.
In eye allergies such as hay fever, eg caused by flower pollen or grasses, histamine causes inflammation of the eyes, making them red, itchy and watery.
Emedastine eye drops work by blocking the histamine receptors in the eyes. This stops it causing inflammation and thus provides relief from the symptoms of the eye allergy.

Side effects
Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Just because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.
Common (affect between 1 in 10 and 1 in 100 people)
Eye pain.
Eye itching or irritation.
Dry eyes.
Red eyes.
Staining of the cornea.
Blurred vision.
Headache.
Uncommon (affect between 1 in 100 and 1 in 1000 people)
Sensation of something in the eyes.
Watery eyes.
Feeling of tired or strained eyes.
Corneal infiltrates.
Unusual taste.
Rash.
Abnormal dreams.
Unknown frequency
Increased heart rate (tachycardia).
The side effects listed above may not include all of the side effects reported by the medicine's manufacturer.
For more information about any other possible risks associated with this medicine, please read the information provided with the medicine or consult your doctor or pharmacist.

Not to be used in
Children under three years of age.
The manufacturer states that these eye drops are not recommended for elderly people over 65 years of age, or people who have problems with their liver or kidney function, because they have not been studied in these groups of people.
This medicine should not be used if you are allergic to any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy.
If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.