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Cosopt is a combination of two drugs; timolol and dorzolamide. Timolol is a beta-blocker while dorzolamide is a carbonic anhydrase inhibitor. You can purchase these two active ingredients on their own as a generic alternative to Cosopt, or you can buy the brand name Cosopt, we carry both the brand and generic eye drops in 2%/0.5% doses in 5ml-15ml bottles!

Cosopt is used to treat high pressure in the eye usually caused by glaucoma, although other eye diseases can also cause high pressure in the eye. If a person goes to long without treating high pressure in the eye, they risk permanent vision loss.

This medication works by decreasing the amount of fluid that is found in the eye which ultimately decreases pressure.

Always follow directions given to you by your doctor. Instructions can be found on your prescription bottle or you can call your health care provider for a reminder if you forget.

This medication is usually taken twice a day.

Remove contact lenses if you wear any. Do not put them back in for at least 15 minutes after putting eye drops in.

Always wash your hands before proceeding.

How to put eye drops in:

  • Tilt your head back
  • Look upward
  • Form a pouch by pulling down on your lower eye lid
  • Hold dropper above eye; apply 1 drop into the pouch
  • Look down and gently close your eyes for 1 – 2 minutes


Tell your doctor about all medications you are currently taking including prescription, over-the-counter, vitamins, and herbal remedies. Be sure to mention any drug allergies you may have.

This drug does pass into breast milk. Consult your doctors about the risks and benefits about using this medication if you are breastfeeding or will be soon.

Cosopt may cause blurry vision temporarily after applying them. Do not drive until this has passed.

This product may mask the fast heartbeat/pounding heart you would normally feel when your blood sugar drops (if you are a diabetic), other symptoms will not be affected.

If any of the following apply to you, make sure you tell your doctor before proceeding with Cosopt.

a history of asthma; chronic obstructive pulmonary disease (COPD); a serious heart condition such as "AV block," slow heartbeats, heart failure, or if you have recently had a heart attack. narrow-angle glaucoma; breathing problems such as bronchitis or emphysema; a history of heart disease or congestive heart failure; diabetes; a muscle disorder such as myasthenia gravis; kidney disease; liver disease; or a thyroid disorder

Side Effects

Please note this is not a complete list of side effects. Not everyone experiences side effects; they are not guaranteed. If you do have side effects and they become unmanageable, consult your doctor about alternate medications.

Common side effects of Cosopt may include:

bitter or unusual taste in your mouth; blurred vision; or burning, stinging, or itching in your eyes.

Serious side effects of Cosopt may include:

swelling or redness of your eyelids; eye redness, pain, discomfort, or sensitivity to light; drainage, crusting, or oozing of your eyes or eyelids; wheezing, gasping, or other breathing problems; swelling, rapid weight gain; or feeling short of breath, even with mild exertion

Signs to watch for:

severe skin reaction: fever, sore throat, cough, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.


What is Cosopt?

Cosopt comes in the form of eye drops and it is used to treat increased pressure in the eye caused by open-angle glaucoma, or a condition called hypertension of the eye. This medication contains two different drugs: Dorzolamide and Timolol.  And it works by decreasing the amount of fluid in your eye which helps to lower high pressure inside the eye and reduces the risk of going blind.  The dosage it comes in is 2%/0.5%. And it can be purchased, with a valid prescription, under the brand name of Cosopt, or the generic Dorzolamide/Timolol Eye Drops, with us at My Drug Center. If you have any questions you may give us a call at 1-877-385-8998.


Who makes Cosopt?

Cosopt is manufactured by the company known as Merck. And it was approved for use in the year 1998.

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