Why is Cosopt prescribed?

Cosopt eye drops are prescribed to treat certain eye conditions such as glaucoma and ocular hypertension. Due to the increased pressure inside the eye, visual problems can develop and may lead to a gradual loss of vision.

What does it do?

In glaucoma and ocular hypertension, there is increased pressure inside the eye. If left untreated, visual problems may develop and lead to a gradual loss of vision.

Cosopt eye drops has two components: Dorzolamide and Timolol. Dorzolamide is classified as a topical carbonic anhydrase inhibitor and it decreases the amount of fluid present in the eye. Timolol is classified as a beta-blocker and it acts to decrease the pressure in the eye.

How should I apply it?

Cosopt is a 2/0.5% ophthalmic solution available in 5ml bottles. It is intended for application to the eye.

When applying the drops, always follow the recommended amount your doctor has prescribed. Follow all directions on the label carefully and ask your doctor or pharmacist for any clarifications.

When using it for the first time, check if the safety strip is intact.

To apply Cosopt eye drops:

If you need to apply other eye medications, administer them at least 10 minutes before or after applying Cosopt eye drops.

Avoid touching the tip of the dropper with your hands or placing it directly on your eye and do not let it come into contact with any surface. The opening is sterile and should not be contaminated with other particles, or else it may cause another infection in your eye. If you suspect your medication to be contaminated, especially when unusual particles are present or any discoloration occurs, stop using the medication and consult your pharmacist.

Apply Cosopt eye drops exactly as your doctor instructed and do not make alterations in the dosage or frequency of application. Do not stop applying the eye drops even if you start to feel better and complete the duration of your treatment.

Always consult your doctor or pharmacist for any concerns you may have when applying Cosopt eye drops.

What if I missed a dose?

Applying the dose properly at the scheduled time is needed to attain the desired effect of the drug. If you miss a dose, apply it as soon as you remember. However, if it is near the time of the next dose, skip the missed dose and catch the next dose at the regular time. Do not apply extra amounts of the eye drops just to make up for your missed dose.

What are the special precautions before using Cosopt eye drops?

Inform your doctor if you are allergic to Dorzolamide, Timolol, any component of Cosopt eye drops, or any other medications.

Tell your doctor if you have or have had asthma, lung disease, heart disease, diabetes, hyperthyroidism, severe allergic reactions, myasthenia gravis, kidney disease, or liver disease.

Do not use Dorzolamide and Timolol while wearing contact lenses. It contains benzalkonium chloride (a preservative) which can be absorbed by soft contact lenses. Remove your contact lenses before applying the medication and wait for 15 minutes after applying the medication before putting them back.

For the drug label information of Cosopt, click here.

Does it have any side effects?

It is important to note that all drugs have corresponding side effects and adverse reactions. Additional information may be obtained when you ask your doctor or pharmacist.

Common side effects include:
• Blurred vision
• Burning or stinging of the eye when applying the medication
• Eye itchiness
• Light sensitivity
• Redness of the eye

Serious side effects include:
• Dizziness
• Muscle weakness
• Pink eye
• Redness or swelling of the eyelid
• Shortness of breath
• Skin rashes
• Swelling of the hands or feet

Is it safe to use it with another drug?

Some drug interactions may cause life-threatening reactions when taken with other medications. Immediately inform your doctor if you are using Cosopt eye drops with any of the following medications:

• Aminophylline
• Arformoterol
• Aspirin
• Cardizem
• Ceritinib
• Choline salicylate
• Clonidine
• Corgard
• Diamox
• Dichlorphenamide
• Diflunisal
• Epinephrine
• Foradil
• Indacaterol
• Inderal
• Isoptin
• Lanoxin
• Magnesium salicylate
• Metaproterenol
• Methacholine
• Methazolamide
• Normodyne
• Norvasc
• Olodaterol
• Oxtriphylline
• Pirbuterol
• Quinidine
• Reserpine
• Ritodrine
• Salmeterol
• Salsalate
• Siponimod
• Sodium salicylate
• Sodium thiosalicylate
• Tenormin
• Terbutaline
• Toprol XL
• Uniphyllin
• Ventolin
• Xopenex HFA

Tell your doctor of any prescription and non-prescription medications, vitamins, supplements, herbal products, and cosmetic products you are using to prevent interactions with Dorzolamide and Timolol. Ask your doctor or pharmacist for other possible interactions not listed within this section.

How should I store it?

Store Cosopt eye drops at room temperature (20-25°C) in a clean environment away from light and moisture. Do not keep it in the bathroom. Always keep it in the container it came in and keep it tightly closed. Keep out of reach from children and pets. Throw away unused or expired medications. Do not flush it in the toilet or down the sink. Consult your pharmacist on the proper disposal of this medication.

What action should I take in case of overdose?

Some symptoms of overdose may include the following:

In the event of an overdose, inform your doctor and seek immediate medical attention

Is it safe for pregnant or breastfeeding women?

According to the US FDA, Cosopt eye drops is categorized as Pregnancy Category C. There are limited studies and data available on the use of Dorzolamide and Timolol in pregnant women. It is unknown if the medication is harmful to the fetus.

It is unknown if Dorzolamide is excreted in human milk while Timolol has been detected in human milk after administration through the oral and ophthalmic routes. Consult your doctor if you are breastfeeding an infant.

The use of Dorzolamide and Timolol in pregnant and breastfeeding women should be avoided unless the potential benefits outweigh the risks.

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