"Researchers are making progress toward understanding how some cases of glaucoma begin. A new study from the National Eye Institute reveals that myocilin—a protein linked to a significant fraction of glaucoma—is needed to insulate peri"...
(brinzolamide/brimonidine tartrate) Ophthalmic Suspension
SIMBRINZA™ (brinzolamide/brimonidine tartrate ophthalmic suspension) 1%/0.2% is a fixed combination of a carbonic anhydrase inhibitor and an alpha 2 adrenergic receptor agonist.
Brinzolamide is described chemically as: (R)-(+)-4-Ethylamino-2-(3-methoxypropyl)-3,4dihydro-2H-thieno [3,2-e]-1,2-thiazine-6-sulfonamide-1,1- dioxide. Its empirical formula is C12H21N3O5S3, and its structural formula is:
Brinzolamide has a molecular weight of 383.5. It is a white powder, which is insoluble in water, very soluble in methanol and soluble in ethanol.
Brimonidine tartrate is described chemically as: 5-bromo-6-(2-imidazolidinylideneamino) quinoxaline L-tartrate. Its empirical formula of C11H10BrN5 – C4H6O6 and its structural formula is:
Brimonidine tartrate has a molecular weight of 442.2. It is a white to yellow powder that is soluble in water (34 mg/mL) at pH 6.5.
SIMBRINZA™ (brinzolamide/brimonidine tartrate ophthalmic suspension) 1%/0.2% is supplied as a sterile, aqueous suspension which has been formulated to be readily suspended following shaking. It has a pH of approximately 6.5 and an osmolality of approximately 270 mOsm/kg.
Each mL of SIMBRINZA™ (brinzolamide/brimonidine tartrate ophthalmic suspension) 1%/0.2% contains: Active ingredients: brinzolamide 10 mg, brimonidine tartrate 2 mg (equivalent to 1.32 mg as brimonidine free base); Preservative: benzalkonium chloride 0.03 mg; Inactive ingredients: propylene glycol, carbomer 974P, boric acid, mannitol, sodium chloride, tyloxapol and purified water. Hydrochloric acid and/or sodium hydroxide may be added to adjust pH.
Last reviewed on RxList: 5/3/2013
This monograph has been modified to include the generic and brand name in many instances.
Additional Simbrinza Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Get breaking medical news.