Alphagan
What is Alphagan?
Brimonidine (bri-MOE-ni-deen) is a drug used as eye drops under the brand names Alphagan and Alphagan-P to treat open-angle glaucoma or ocular hypertension, and as a gel, Mirvaso, for rosacea (facial erythema).
It acts via decreasing synthesis of aqueous humor, and increasing the amount that drains from the eye through uveoscleral outflow. In treating erythema, it acts by vasoconstriction (narrowing of blood vessels).
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