PTCE Top 200 · #190

Dorzolamide

Trusopt

Dorzolamide is the generic name for the brand-name drug Trusopt. It is a carbonic anhydrase inhibitor (glaucoma) used to treat glaucoma (↑IOP). On the PTCE Top 200 drug list, Dorzolamide ranks #190 and is one of the most frequently tested ophthalmic medications — commonly quizzed on its brand–generic pair, drug class, and key side effects.

Generic nameDorzolamide
Brand name(s)Trusopt
Drug classCarbonic anhydrase inhibitor (glaucoma)
Class groupOphthalmic
Common useglaucoma (↑IOP)
DEA scheduleUnscheduled
AvailabilityPrescription only (Rx)

What is Dorzolamide used for?

Reduction of elevated intraocular pressure in open-angle glaucoma or ocular hypertension (ophthalmic carbonic anhydrase inhibitor).

What drug class is Dorzolamide?

Dorzolamide is a Carbonic anhydrase inhibitor (glaucoma) in the Ophthalmic group. Knowing the class is the fastest way to predict its uses, side effects, and the brand↔generic pairs the PTCE tests.

Common side effects of Dorzolamide

Major interactions

Is Dorzolamide a controlled substance?

No. Dorzolamide is not a federally controlled substance (it is unscheduled by the DEA).

How to remember Dorzolamide (PTCE mnemonic)

TRU-sopt TRUly drops eye pressure — DORZ-olamide is topical carbonic anhydrase inhibitor. SULFA-derived (allergy crossover); bitter taste, ocular burning; punctal occlusion ↓ systemic SEs.
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PTCE exam tip

Dorzolamide is a sulfonamide — the sulfa-allergy screen applies even for EYE drops — and Cosopt combines it with timolol: two glaucoma mechanisms, one bottle.

Dorzolamide FAQ

What is the brand name for Dorzolamide?

The brand name for Dorzolamide is Trusopt.

What is Dorzolamide used for?

Dorzolamide is used to treat glaucoma (↑IOP). Reduction of elevated intraocular pressure in open-angle glaucoma or ocular hypertension (ophthalmic carbonic anhydrase inhibitor).

What drug class is Dorzolamide?

Dorzolamide is a Carbonic anhydrase inhibitor (glaucoma) (Ophthalmic group).

Is Dorzolamide a controlled substance?

No. Dorzolamide is not a federally controlled substance (it is unscheduled by the DEA).

Related drugs in the Ophthalmic group

Drill Dorzolamide the way the PTCE asks it

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Last reviewed June 25, 2026. Educational use only — not medical advice. Verify clinical specifics with your pharmacist or a current label source such as DailyMed. RxReflex is not affiliated with or endorsed by the Pharmacy Technician Certification Board (PTCB).