Key takeaways
Simbrinza (brinzolamide/brimonidine) and Cosopt (dorzolamide/timolol) are both eye drop medications used to lower eye pressure in people with open-angle glaucoma or ocular hypertension (high eye pressure). But they have several differences. Simbrinza combines a carbonic anhydrase inhibitor (brinzolamide) and an alpha agonist (brimonidine). Cosopt contains a carbonic anhydrase inhibitor (dorzolamide) and a beta blocker (timolol). Simbrinza is typically used 3 times a day and is only available as a brand medication, making it potentially more expensive. In contrast, Cosopt is used twice a day and is available in both brand and generic forms, which can be more affordable. Cosopt also offers a preservative-free option for those sensitive to preservatives, while Simbrinza does not. Additionally, Cosopt is not recommended for people with certain heart or lung conditions, such as uncontrolled asthma or chronic obstructive pulmonary disease (COPD), due to the presence of timolol. Both medications require careful handling to avoid contamination and should not be used with contact lenses immediately after application.
