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Tobramycin/dexamethasone, sold under the brand name Tobradex, is a fixed-dose combination medication in the form of eye drops and eye ointment, marketed by Alcon. [1] [2] [3] The active ingredients are tobramycin (an antibiotic) and dexamethasone (a corticosteroid). [2] It is prescribed for the treatment of pink eye in combination with ...
It is a combination of loteprednol, as the etabonate, a corticosteroid; and tobramycin, an aminoglycoside antibiotic. [1] It is used as drops in the eye . [ 1 ]
Tobramycin does not pass the gastro-intestinal tract, so for systemic use it can only be given intravenously or by injection into a muscle. Eye drops and ointments (tobramycin only, Tobrex, or combined with dexamethasone, sold as Tobradex) and nebulised formulations both have low systemic absorption. The formulation for injection is branded Nebcin.
Preservatives are useful for keeping bacteria out of your eye drops, but if used for more than a few weeks at a time, they can sometimes irritate the surface of the eyes, says Dr. Bielory.
Figure 1.0 - Basic anatomical features of the human eye. Ophthalmic drug administration is the administration of a drug to the eyes, most typically as an eye drop formulation. Topical formulations are used to combat a multitude of diseased states of the eye. These states may include bacterial infections, eye injury, glaucoma, and dry eye. [1]
Because long term use (more than 10 days) can cause increased intraocular pressure, loteprednol may interfere with the treatment of glaucoma. Following ocular administration, the drug is very slowly absorbed into the blood, therefore the blood level is limited to an extremely small concentration, and interactions with drugs taken by mouth or through any route other than topical ophthalmic are ...