Description Combipres Eye Drops is comprised of two components: Brimonidine Tartrate & Timolol Maleate. Brimonidine Tartrate is a selective alpha-2 adrenergic receptor agonist having a dual mechanism of action. It decreases aqueous humor production and increases non-pressure dependent uveoscleral outflow. Timolol maleate is a beta1 and beta2 (non-selective) adrenergic receptor blocking agent that does not […]