Cosopt is the brand name for the combination ophthalmic solution containing dorzolamide and timolol. Dorzolamide is a carbonic anhydrase inhibitor that reduces aqueous humor production by blocking enzyme activity in the ciliary body. Timolol is a non-selective beta-adrenergic antagonist that decreases outflow of aqueous humor through the trabecular meshwork. Together the two agents lower intraocular pressure by simultaneously decreasing fluid formation and enhancing fluid drainage. The medication is prescribed to manage elevated intraocular pressure associated with glaucoma or ocular hypertension. Pharmacodynamically the combined effect provides additive pressure reduction without relying on systemic absorption significant enough to alter cardiovascular function.

Cosopt is a prescription eye drop medication used to lower intraocular pressure in patients with glaucoma. It works by reducing the production of aqueous humor in the eye. The active ingredients are dorzolamide and timolol which belong to different drug classes. Dorzolamide is a carbonic anhydrase inhibitor that blocks enzyme activity in ocular tissue. Timolol is a beta blocker that decreases fluid flow by antagonizing sympathetic receptors. Together they synergistically lower eye pressure to improve visual outcomes. The medication is administered as a drop placed in the conjunctival sac for therapeutic effect. By targeting specific enzymes and receptors the drug combination provides effective control of ocular hypertension without significantly affecting systemic circulation.

Cosopt may cause eye irritation as a common side effect. Some users experience temporary blurred vision after application. Dryness of the ocular surface can occur in certain individuals. Headache and mild fatigue are reported in a minority of patients. A transient change in taste perception may be noted after dosing. Occasional mild allergic skin reactions have been documented.

The medication may cause blurred vision or eye discomfort after use. Some patients experience a bitter taste in the mouth or dry eyes. Headache and mild eye irritation are also reported occasionally. Rare systemic effects such as dizziness or allergic skin reactions can occur. Regular eye examinations are part of routine monitoring during treatment. Long-term safety data indicate a low incidence of serious complications.