Brimonidine

Brimonidine (bri-MOE-ni-deen, brand names Alphagan and Alphagan-P) is a drug used to treat open-angle glaucoma or ocular hypertension.

It acts via decreasing synthesis of aqueous humor, and increasing the amount that drains from the eye through uveoscleral outflow. As a treatment for glaucoma, it is usually given in eyedrop form.

Brimonidine is an α2-adrenergic receptor agonist.

Alpha 2 agonists, through the activation of the Gi GPCR, inhibit the activity of adenylate cyclase. This reduces cAMP and hence aqueous humour production by the ciliary body.

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Effectiveness:
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