Cosopt Preservative Free (Dorzolamide/Timolol)

Cosopt Preservative Free (Dorzolamide/Timolol) Medication Information

Uses

Cosopt is an eye drop used to treat open-angle glaucoma or ocular hypertension. 

Dosage

The eye drop is supplied in an 18 mL bottle. 

Side Effects

The most common side effects of Cosopt include:

• Ocular burning
• Conjunctival hyperemia
• Blurred vision
• Eye itching
• Keratitis 

Speak with your doctor for a full list of side effects that apply to you if you are taking Cosopt.

Precautions

Cosopt has not been studied in patients with kidney or liver impairment. 

Patients need to avoid touching the tip of the bottle to their eye as it can lead to eye infection. 

If patients have eye surgery or have eye condition they need to speak with their doctor immediately. 

Patients with asthma, or chronic obstructive pulmonary disease should not take Cosopt. 

Interactions

Common drug interactions with Cosopt include:

• Carbonic anhydrase inhibitor
• Beta blockers
• Calcium antagonist
• Catecholamine depleting drugs
• Digoxin
• Clonidine

Speak with your doctor for more information and before starting a new medication with Cosopt. 

Storage

Store at room temperature (59-86 ºF). Protect from light. 

Pharmacist Tips

• Wash your hands before instilling the Cosopt drops. 
• Before using Cosopt, be sure that the Safety Strip on the bottle is unbroken. 
• Do not touch the Cosopt bottle tip to your eye while instilling drops. 

Cosopt PF FAQs

Does Cosopt cause dizziness?

Cosopt should not cause dizziness, if you experience this contact your doctor immediately.

What is Cosopt used for?

Cosopt is used to treat glaucoma. 

What happens if you don’t take your Cosopt drop?

Cosopt is used to slow the progression of Cosopt, if you don't take your medication it cannot provide this benefit. 

How many drops are in Cosopt?

There are approximately 25 drops per milliliter of Cosopt. 

How often do you use Cosopt?

Cosopt is dosed as one drop twice a day in the affected eye. 

Related Drugs

• Alphagan
• Azarga
• Azopt
• Combigan
• Lumigan
• Simbrinza
• Trusopt
• Xalatan

Reference:

Cosopt {package insert}. Whitehouse Station, NJ: Merck & Co., Inc.; 2005.

https://www.accessdata.fda.gov/drugsatfda_docs/label/2013/022320s004lbl.pdf