Alphagan P contains brimonidine tartrate as its active ingredient. This medication is a selective α2-adrenergic agonist.
Brimonidine works by decreasing the production of aqueous humor, the fluid that fills the eye. This reduced production lowers intraocular pressure (IOP).
The mechanism involves binding to α2-adrenergic receptors in the eye’s ciliary body. This binding triggers a cascade of events leading to reduced aqueous humor secretion.
Consequently, Alphagan P helps manage IOP in patients with glaucoma and ocular hypertension.


