Alphagan is the brand formulation of Brimonidine and is an alpha-adrenergic agonist. It is available as an ophthalmic and has the half-life of 3 hours.


Alphagan is used in treating patients with open-angle glaucoma. It helps by decreasing the pressure that is present in the eyes. This is achieved by allowing fluid drainage as well as diminishing the amount of fluid that is been formed in the eyes. When the blood pressure in the eyes is lowered, it inhibits certain conditions like vision problem, damage in nerves as well as blindness.

Dosing guide

Before using Alphagan, consult with the doctor regarding the appropriate dose that would be suitable for you. It is taken three times in a day. Wash the hands before using this medication.

Lie in a comfortable position facing the ceiling. Open the eyelid, place a drop in to it and close the eyes. Now gently press the corner of the eye which is near to the nose. This is done to avoid the medication from flushing out of the eyes. Never blink or rub the eyes. If it is prescribed to place another dose then it can be done after few minutes. Continue the same procedure with the other eye.

The tip of the medication should not be touched with bare hands as this might contaminate the drug and can cause serious eye problems to the patient. If it is found that the color of the eye drop is changed, do not use it. Two doses of alphagan should not be taken close to each other. This may help you to avoid drug overdose.

There are certain factors to be considered prior to commencing the treatment. The first would be to convey about the medical illnesses that a person is suffering from. To name a few of them are heart related disorder, kidney or liver disease, blood vessel disease and history of anxiety disorder. Never forget to tell if you are pregnant, planning to become pregnant or nursing a baby.

Side Effects

Some of the common side effects that a patient may experience whilst taking this medication are dry eyes, burning in the eyes, dizziness, drowsiness, and problems related to vision, cough and running nose. It is very important to seek medical help immediately when a person suffers from severe ill effects like trouble in breathing, swelling of the face, lips or tongue, allergic reaction like hives or rash, sore throat, dizziness, change in vision and shortness of breath.

Relative contraindications to Alphagan

The ingredients present in the drugs may interact with each other. The patients should have concern about this issue prior to using of the eye drops. Few among the drugs that may interact with Alphagan are Linezolid, Barbiturates, Furazolidone, Amitriptyline, and Phenelzine.


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