Dorzolamide/timolol
（重定向自Cosopt）
Dorzolamide/timolol eyedrops (trade name Cosopt) are used for lowering pressure in the eye to normal levels, and a treatment for glaucoma. The drug is a combination of two chemicals: dorzolamide hydrochloride and timolol maleate. Both chemicals work by decreasing the production of aqueous humor. It gained Food and Drug Administration (FDA) approval in April 1998, and is supplied by Merck.