Senior Health Home > Tobramycin and Dexamethasone

What If I Overdose?

It is not clear what exactly to expect from an overdose with this medication, other than the usual side effects that occur with normal dosages. If you happen to overdose on this medication, seek immediate medical attention.
(Click Tobradex Overdose for more information.)

How Does Tobramycin and Dexamethasone Work?

Tobramycin and dexamethasone contains two active ingredients -- tobramycin and dexamethasone. The medicine belongs to a class of antibiotics known as aminoglycosides. Dexamethasone is a corticosteroid (often known simply as a "steroid") that works by decreasing inflammation.
Because dexamethasone also interferes with the body's defense mechanisms that fight off infections, it is often a good idea to use dexamethasone in combination with an antibiotic (such as tobramycin), especially if there is already an infection present or if there is a risk for infection.

When and How to Use Tobramycin and Dexamethasone

Some general considerations include the following:
  • This medication comes in the form of an eye suspension (drops) and an eye ointment. It is typically used in the affected eye(s) 3 to 12 times a day (depending on whether the ointment or the drops are used and the severity of the problem).
  • In order to prevent contamination of the drops, do not touch the tip of the dropper or ointment tube to any surface, including the surface of the eye.
  • To use the ointment, make a small pocket in the lower lid by gently pulling down on the cheek just below the eye. Apply about ½ an inch of ointment carefully, and then look downward before closing your eye. The ointment may temporarily cause blurred vision.
  • When using the drops, make sure to shake the bottle well before each use.
  • For the medication to work properly, it must be used as directed.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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