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Cosopt Ophthalmic Drops, available in a 5ml bottle, is a prescription medication used to treat a variety of eye conditions, primarily glaucoma and ocular hypertension. This ophthalmic solution contains two active ingredients: Dorzolamide HCl (2%) and Timolol Maleate (5%). Let's delve into a detailed product description of Cosopt and its key components.

Dorzolamide HCl (2%) is a carbonic anhydrase inhibitor. It works by reducing the production of aqueous humor, the clear fluid that fills the front part of the eye. By inhibiting carbonic anhydrase in the ciliary processes of the eye, Dorzolamide helps decrease intraocular pressure (IOP), which is crucial in managing conditions like open-angle glaucoma and ocular hypertension. Lowering IOP can help prevent damage to the optic nerve and preserve vision.


Product Name

Cosopt Ophthalmic Drops 5ml

Product Form


Pack Size


Marketed By

OBS Pharma

Generic Category



Dorzolamide Hcl 2%,Timolol Maleate 5%



The recommended dosing for Cosopt is as follows:

For Adults:

  • The usual dose is one drop of Cosopt in the affected eye(s) two times a day, approximately 12 hours apart. 

Some of the common side effects are as follows:

  • Eye Discomfort: Burning, stinging, itching, or eye redness.
  • Blurred Vision: Temporary vision changes or blurriness may occur.
  • Taste Changes: Some people may experience a bitter or unusual taste after using the drops.
  • Eye Allergies: Allergic reactions such as eye redness, itching, and swelling may occur.
  • Dry Eyes: Dryness, irritation, or a gritty eye feeling.
  • Increased Tear Production: Paradoxically, some patients may experience watery eyes. 

1. What are Cosopt ophthalmic drops, and what are they used for?

Cosopt is a prescription medication to lower intraocular pressure in people with certain eye conditions, including glaucoma and ocular hypertension. It is a combination of two active ingredients: Dorzolamide and Timolol.

2. How does Cosopt work?

Dorzolamide reduces fluid production (aqueous humor) in the eye, while Timolol decreases the amount of fluid produced and increases fluid drainage. Together, these actions help lower intraocular pressure, reducing the risk of optic nerve damage.

3. How should I use Cosopt eye drops?

Use the medication exactly as prescribed by your healthcare provider. Typically, one drop in the affected eye(s) is applied twice daily. Follow the instructions provided with the medication, and do not change the dosage without consulting your doctor. 

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