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A member asked:
I'm using cosopt eye drop for glaucoma and have a sulfa allergy, anything to worry about?
4 doctors weighed in across 2 answers
Possibly: Cosopt is a combination eye drop containing dorzolamide and timoptic (timolol). Dorzolamide has a "sulfa group" in its chemical formula. Some patients, not all, who have a sulfa allergy are allergic to it. This present as a red, itchy eye and surrounding skin. If this happens, stop the drop and call your doctor. Go to the er with difficulty breathing or swallowing.
Answered 8/10/2018
4.6k views
Unlikely: Studies have shown that having a sulfa structure in a drug rarely causes problem in people with a true sulfa allergy.
Answered 3/24/2018
4.6k views
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