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Cosopt PF 2%-0.5% Ophthalmic Solution

Prairie Eye Center · FDA-approved active Small molecule

Cosopt PF combines a topical carbonic anhydrase inhibitor (dorzolamide) and a beta-blocker (timolol) to reduce intraocular pressure through decreased aqueous humor production.

Cosopt PF combines a topical carbonic anhydrase inhibitor (dorzolamide) and a beta-blocker (timolol) to reduce intraocular pressure through decreased aqueous humor production. Used for Open-angle glaucoma, Ocular hypertension.

At a glance

Generic nameCosopt PF 2%-0.5% Ophthalmic Solution
SponsorPrairie Eye Center
Drug classFixed-dose combination of carbonic anhydrase inhibitor and beta-blocker
TargetCarbonic anhydrase II (dorzolamide component); beta-adrenergic receptors (timolol component)
ModalitySmall molecule
Therapeutic areaOphthalmology
PhaseFDA-approved

Mechanism of action

Dorzolamide inhibits carbonic anhydrase in the ciliary body, reducing aqueous humor secretion. Timolol is a non-selective beta-adrenergic antagonist that further decreases aqueous humor production and may increase uveoscleral outflow. Together, these dual mechanisms provide additive intraocular pressure reduction in glaucoma and ocular hypertension.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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